diff --git a/api/core/agent/base_agent_runner.py b/api/core/agent/base_agent_runner.py
index 860ec5de0c..a703c31de9 100644
--- a/api/core/agent/base_agent_runner.py
+++ b/api/core/agent/base_agent_runner.py
@@ -173,7 +173,7 @@ class BaseAgentRunner(AppRunner):
             }:
                 continue
             enum = []
-            if parameter.type == ToolParameter.ToolParameterType.SELECT:
+            if parameter.type in {ToolParameter.ToolParameterType.SELECT, ToolParameter.ToolParameterType.MULTI_SELECT}:
                 enum = [option.value for option in parameter.options]
 
             message_tool.parameters["properties"][parameter.name] = {
@@ -264,7 +264,7 @@ class BaseAgentRunner(AppRunner):
             }:
                 continue
             enum = []
-            if parameter.type == ToolParameter.ToolParameterType.SELECT:
+            if parameter.type in {ToolParameter.ToolParameterType.SELECT, ToolParameter.ToolParameterType.MULTI_SELECT}:
                 enum = [option.value for option in parameter.options]
 
             prompt_tool.parameters["properties"][parameter.name] = {
diff --git a/api/core/tools/entities/tool_entities.py b/api/core/tools/entities/tool_entities.py
index d8637fd2cb..07e9dc6248 100644
--- a/api/core/tools/entities/tool_entities.py
+++ b/api/core/tools/entities/tool_entities.py
@@ -142,12 +142,13 @@ class ToolParameter(BaseModel):
         NUMBER = "number"
         BOOLEAN = "boolean"
         SELECT = "select"
+        MULTI_SELECT = "multi-select"
         SECRET_INPUT = "secret-input"
         FILE = "file"
         FILES = "files"
 
         # deprecated, should not use.
-        SYSTEM_FILES = "systme-files"
+        SYSTEM_FILES = "system-files"
 
         def as_normal_type(self):
             if self in {
@@ -155,6 +156,8 @@ class ToolParameter(BaseModel):
                 ToolParameter.ToolParameterType.SELECT,
             }:
                 return "string"
+            elif self == ToolParameter.ToolParameterType.MULTI_SELECT:
+                return "array"
             return self.value
 
         def cast_value(self, value: Any, /):
@@ -198,6 +201,7 @@ class ToolParameter(BaseModel):
                         ToolParameter.ToolParameterType.SYSTEM_FILES
                         | ToolParameter.ToolParameterType.FILE
                         | ToolParameter.ToolParameterType.FILES
+                        | ToolParameter.ToolParameterType.MULTI_SELECT
                     ):
                         return value
                     case _:
diff --git a/api/core/tools/provider/builtin/firecrawl/tools/crawl.py b/api/core/tools/provider/builtin/firecrawl/tools/crawl.py
index 15ab510c6c..18b9671a34 100644
--- a/api/core/tools/provider/builtin/firecrawl/tools/crawl.py
+++ b/api/core/tools/provider/builtin/firecrawl/tools/crawl.py
@@ -29,7 +29,7 @@ class CrawlTool(BuiltinTool):
         payload["allowExternalLinks"] = tool_parameters.get("allowExternalLinks", False)
         payload["webhook"] = tool_parameters.get("webhook")
 
-        scrapeOptions["formats"] = get_array_params(tool_parameters, "formats")
+        scrapeOptions["formats"] = tool_parameters.get("formats")
         scrapeOptions["headers"] = get_json_params(tool_parameters, "headers")
         scrapeOptions["includeTags"] = get_array_params(tool_parameters, "includeTags")
         scrapeOptions["excludeTags"] = get_array_params(tool_parameters, "excludeTags")
diff --git a/api/core/tools/provider/builtin/firecrawl/tools/crawl.yaml b/api/core/tools/provider/builtin/firecrawl/tools/crawl.yaml
index 0d7dbcac20..0d51f0fed4 100644
--- a/api/core/tools/provider/builtin/firecrawl/tools/crawl.yaml
+++ b/api/core/tools/provider/builtin/firecrawl/tools/crawl.yaml
@@ -123,18 +123,35 @@ parameters:
     form: form
 ############## Scrape Options #######################
   - name: formats
-    type: string
+    type: multi-select
     label:
-      en_US: Formats
+      en_US: Output Formats
       zh_Hans: 结果的格式
-    placeholder:
-      en_US: Use commas to separate multiple tags
-      zh_Hans: 多个标签时使用半角逗号分隔
+    options:
+      - value: markdown
+        label:
+          en_US: markdown
+      - value: html
+        label:
+          en_US: html
+      - value: rawHtml
+        label:
+          en_US: rawHtml
+      - value: links
+        label:
+          en_US: links
+      - value: screenshot
+        label:
+          en_US: screenshot
+      - value: extract
+        label:
+          en_US: extract
+      - value: screenshot@fullPage
+        label:
+          en_US: screenshot@fullPage
     human_description:
-      en_US: |
-        Formats to include in the output. Available options: markdown, html, rawHtml, links, screenshot
-      zh_Hans: |
-        输出中应包含的格式。可以填入: markdown, html, rawHtml, links, screenshot
+      en_US: Formats to include in the output. Multiple selections possible.
+      zh_Hans: 输出中应包含的格式。可多选。
     form: form
   - name: headers
     type: string
diff --git a/api/core/tools/provider/builtin/firecrawl/tools/scrape.py b/api/core/tools/provider/builtin/firecrawl/tools/scrape.py
index f00a9b31ce..54e0e62299 100644
--- a/api/core/tools/provider/builtin/firecrawl/tools/scrape.py
+++ b/api/core/tools/provider/builtin/firecrawl/tools/scrape.py
@@ -18,7 +18,7 @@ class ScrapeTool(BuiltinTool):
         payload = {}
         extract = {}
 
-        payload["formats"] = get_array_params(tool_parameters, "formats")
+        payload["formats"] = tool_parameters.get("formats")
         payload["onlyMainContent"] = tool_parameters.get("onlyMainContent", True)
         payload["includeTags"] = get_array_params(tool_parameters, "includeTags")
         payload["excludeTags"] = get_array_params(tool_parameters, "excludeTags")
diff --git a/api/core/tools/provider/builtin/firecrawl/tools/scrape.yaml b/api/core/tools/provider/builtin/firecrawl/tools/scrape.yaml
index 8f1f1348a4..472cf6eae8 100644
--- a/api/core/tools/provider/builtin/firecrawl/tools/scrape.yaml
+++ b/api/core/tools/provider/builtin/firecrawl/tools/scrape.yaml
@@ -23,18 +23,35 @@ parameters:
     form: llm
 ############## Payload #######################
   - name: formats
-    type: string
+    type: multi-select
     label:
-      en_US: Formats
+      en_US: Output Formats
       zh_Hans: 结果的格式
-    placeholder:
-      en_US: Use commas to separate multiple tags
-      zh_Hans: 多个标签时使用半角逗号分隔
+    options:
+      - value: markdown
+        label:
+          en_US: markdown
+      - value: html
+        label:
+          en_US: html
+      - value: rawHtml
+        label:
+          en_US: rawHtml
+      - value: links
+        label:
+          en_US: links
+      - value: screenshot
+        label:
+          en_US: screenshot
+      - value: extract
+        label:
+          en_US: extract
+      - value: screenshot@fullPage
+        label:
+          en_US: screenshot@fullPage
     human_description:
-      en_US: |
-        Formats to include in the output. Available options: markdown, html, rawHtml, links, screenshot, extract, screenshot@fullPage
-      zh_Hans: |
-        输出中应包含的格式。可以填入: markdown, html, rawHtml, links, screenshot, extract, screenshot@fullPage
+      en_US: Formats to include in the output. Multiple selections possible.
+      zh_Hans: 输出中应包含的格式。可多选。
     form: form
   - name: onlyMainContent
     type: boolean
diff --git a/api/core/tools/provider/builtin_tool_provider.py b/api/core/tools/provider/builtin_tool_provider.py
index 955a0add3b..93cedd8716 100644
--- a/api/core/tools/provider/builtin_tool_provider.py
+++ b/api/core/tools/provider/builtin_tool_provider.py
@@ -7,7 +7,6 @@ from core.tools.entities.tool_entities import ToolParameter, ToolProviderCredent
 from core.tools.entities.values import ToolLabelEnum, default_tool_label_dict
 from core.tools.errors import (
     ToolNotFoundError,
-    ToolParameterValidationError,
     ToolProviderNotFoundError,
 )
 from core.tools.provider.tool_provider import ToolProviderController
@@ -146,70 +145,6 @@ class BuiltinToolProviderController(ToolProviderController):
         """
         return self.identity.tags or []
 
-    def validate_parameters(self, tool_id: int, tool_name: str, tool_parameters: dict[str, Any]) -> None:
-        """
-        validate the parameters of the tool and set the default value if needed
-
-        :param tool_name: the name of the tool, defined in `get_tools`
-        :param tool_parameters: the parameters of the tool
-        """
-        tool_parameters_schema = self.get_parameters(tool_name)
-
-        tool_parameters_need_to_validate: dict[str, ToolParameter] = {}
-        for parameter in tool_parameters_schema:
-            tool_parameters_need_to_validate[parameter.name] = parameter
-
-        for parameter in tool_parameters:
-            if parameter not in tool_parameters_need_to_validate:
-                raise ToolParameterValidationError(f"parameter {parameter} not found in tool {tool_name}")
-
-            # check type
-            parameter_schema = tool_parameters_need_to_validate[parameter]
-            if parameter_schema.type == ToolParameter.ToolParameterType.STRING:
-                if not isinstance(tool_parameters[parameter], str):
-                    raise ToolParameterValidationError(f"parameter {parameter} should be string")
-
-            elif parameter_schema.type == ToolParameter.ToolParameterType.NUMBER:
-                if not isinstance(tool_parameters[parameter], int | float):
-                    raise ToolParameterValidationError(f"parameter {parameter} should be number")
-
-                if parameter_schema.min is not None and tool_parameters[parameter] < parameter_schema.min:
-                    raise ToolParameterValidationError(
-                        f"parameter {parameter} should be greater than {parameter_schema.min}"
-                    )
-
-                if parameter_schema.max is not None and tool_parameters[parameter] > parameter_schema.max:
-                    raise ToolParameterValidationError(
-                        f"parameter {parameter} should be less than {parameter_schema.max}"
-                    )
-
-            elif parameter_schema.type == ToolParameter.ToolParameterType.BOOLEAN:
-                if not isinstance(tool_parameters[parameter], bool):
-                    raise ToolParameterValidationError(f"parameter {parameter} should be boolean")
-
-            elif parameter_schema.type == ToolParameter.ToolParameterType.SELECT:
-                if not isinstance(tool_parameters[parameter], str):
-                    raise ToolParameterValidationError(f"parameter {parameter} should be string")
-
-                options = parameter_schema.options
-                if not isinstance(options, list):
-                    raise ToolParameterValidationError(f"parameter {parameter} options should be list")
-
-                if tool_parameters[parameter] not in [x.value for x in options]:
-                    raise ToolParameterValidationError(f"parameter {parameter} should be one of {options}")
-
-            tool_parameters_need_to_validate.pop(parameter)
-
-        for parameter in tool_parameters_need_to_validate:
-            parameter_schema = tool_parameters_need_to_validate[parameter]
-            if parameter_schema.required:
-                raise ToolParameterValidationError(f"parameter {parameter} is required")
-
-            # the parameter is not set currently, set the default value if needed
-            if parameter_schema.default is not None:
-                default_value = parameter_schema.type.cast_value(parameter_schema.default)
-                tool_parameters[parameter] = default_value
-
     def validate_credentials(self, credentials: dict[str, Any]) -> None:
         """
         validate the credentials of the provider
diff --git a/api/core/tools/provider/tool_provider.py b/api/core/tools/provider/tool_provider.py
index bc05a11562..5253adcdd9 100644
--- a/api/core/tools/provider/tool_provider.py
+++ b/api/core/tools/provider/tool_provider.py
@@ -117,6 +117,18 @@ class ToolProviderController(BaseModel, ABC):
                 if tool_parameters[parameter] not in [x.value for x in options]:
                     raise ToolParameterValidationError(f"parameter {parameter} should be one of {options}")
 
+            elif parameter_schema.type == ToolParameter.ToolParameterType.MULTI_SELECT:
+                if not isinstance(tool_parameters[parameter], list):
+                    raise ToolParameterValidationError(f"parameter {parameter} should be list")
+
+                options = parameter_schema.options
+                if not isinstance(options, list):
+                    raise ToolParameterValidationError(f"parameter {parameter} options should be list")
+
+                for item in tool_parameters[parameter]:
+                    if item not in [x.value for x in options]:
+                        raise ToolParameterValidationError(f"parameter {parameter} should be one of {options}")
+
             tool_parameters_need_to_validate.pop(parameter)
 
         for parameter in tool_parameters_need_to_validate:
diff --git a/api/core/tools/tool_manager.py b/api/core/tools/tool_manager.py
index ac333162b6..71fd174c4f 100644
--- a/api/core/tools/tool_manager.py
+++ b/api/core/tools/tool_manager.py
@@ -220,6 +220,11 @@ class ToolManager:
                 raise ValueError(
                     f"tool parameter {parameter_rule.name} value {parameter_value} not in options {options}"
                 )
+        elif parameter_rule.type == ToolParameter.ToolParameterType.MULTI_SELECT and parameter_value is not None:
+            options = [x.value for x in parameter_rule.options]
+            for value in parameter_value:
+                if value not in options:
+                    raise ValueError(f"tool parameter {parameter_rule.name} value {value} not in options {options}")
 
         return parameter_rule.type.cast_value(parameter_value)
 
@@ -228,7 +233,7 @@ class ToolManager:
         cls, tenant_id: str, app_id: str, agent_tool: AgentToolEntity, invoke_from: InvokeFrom = InvokeFrom.DEBUGGER
     ) -> Tool:
         """
-        get the agent tool runtime
+        get the agent tool runtim
         """
         tool_entity = cls.get_tool_runtime(
             provider_type=agent_tool.provider_type,
diff --git a/api/tests/unit_tests/core/tools/test_tool_parameter_type.py b/api/tests/unit_tests/core/tools/test_tool_parameter_type.py
index 8a41678267..067bc52c26 100644
--- a/api/tests/unit_tests/core/tools/test_tool_parameter_type.py
+++ b/api/tests/unit_tests/core/tools/test_tool_parameter_type.py
@@ -5,6 +5,7 @@ def test_get_parameter_type():
     assert ToolParameter.ToolParameterType.STRING.as_normal_type() == "string"
     assert ToolParameter.ToolParameterType.SELECT.as_normal_type() == "string"
     assert ToolParameter.ToolParameterType.SECRET_INPUT.as_normal_type() == "string"
+    assert ToolParameter.ToolParameterType.MULTI_SELECT.as_normal_type() == "array"
     assert ToolParameter.ToolParameterType.BOOLEAN.as_normal_type() == "boolean"
     assert ToolParameter.ToolParameterType.NUMBER.as_normal_type() == "number"
     assert ToolParameter.ToolParameterType.FILE.as_normal_type() == "file"
@@ -30,6 +31,10 @@ def test_cast_parameter_by_type():
     assert ToolParameter.ToolParameterType.SELECT.cast_value(1.0) == "1.0"
     assert ToolParameter.ToolParameterType.SELECT.cast_value(None) == ""
 
+    # multi select
+    assert ToolParameter.ToolParameterType.MULTI_SELECT.cast_value(["test", "test2"]) == ["test", "test2"]
+    assert ToolParameter.ToolParameterType.MULTI_SELECT.cast_value([2, 1, 1.0]) == [2, 1, 1.0]
+
     # boolean
     true_values = [True, "True", "true", "1", "YES", "Yes", "yes", "y", "something"]
     for value in true_values:
diff --git a/web/app/components/base/select/index.tsx b/web/app/components/base/select/index.tsx
index c70cf24661..cf36c60c89 100644
--- a/web/app/components/base/select/index.tsx
+++ b/web/app/components/base/select/index.tsx
@@ -29,7 +29,7 @@ export type Item = {
 export type ISelectProps = {
   className?: string
   wrapperClassName?: string
-  renderTrigger?: (value: Item | null) => JSX.Element | null
+  renderTrigger?: (value: Item | Item[] | null) => JSX.Element | null
   items?: Item[]
   defaultValue?: number | string
   disabled?: boolean
@@ -378,5 +378,127 @@ const PortalSelect: FC<PortalSelectProps> = ({
     </PortalToFollowElem>
   )
 }
-export { SimpleSelect, PortalSelect }
+
+export type MultiSelectProps = Omit<ISelectProps, 'onSelect'> & {
+  onSelect: (values: Item[]) => void
+  selectedValues?: (number | string)[]
+}
+
+const MultiSelect: FC<MultiSelectProps> = ({
+  className,
+  wrapperClassName = '',
+  renderTrigger,
+  items = defaultItems,
+  selectedValues = [],
+  disabled = false,
+  onSelect,
+  placeholder,
+  optionWrapClassName,
+  optionClassName,
+  hideChecked,
+  renderOption,
+}) => {
+  const { t } = useTranslation()
+  const localPlaceholder = placeholder || t('common.placeholder.select')
+
+  const [selectedItems, setSelectedItems] = useState<Item[]>([])
+  useEffect(() => {
+    const defaultSelected = items.filter((item: Item) => selectedValues.includes(item.value))
+    setSelectedItems(defaultSelected)
+  }, [selectedValues, items])
+
+  const handleSelect = (newItems: Item[]) => {
+    if (!disabled) {
+      setSelectedItems(newItems)
+      onSelect(newItems)
+    }
+  }
+
+  const removeItem = (item: Item) => {
+    const newSelectedItems = selectedItems.filter(i => i.value !== item.value)
+    setSelectedItems(newSelectedItems)
+    onSelect(newSelectedItems)
+  }
+
+  return (
+    <Listbox
+      value={selectedItems}
+      onChange={handleSelect}
+      multiple
+    >
+      <div className={classNames('group/multi-select relative', wrapperClassName)}>
+        {renderTrigger && <Listbox.Button className='w-full'>{renderTrigger(selectedItems)}</Listbox.Button>}
+        {!renderTrigger && (
+          <Listbox.Button className={classNames(`flex flex-wrap items-center w-full min-h-[36px] rounded-lg border-0 bg-gray-100 pl-3 pr-10 sm:text-sm sm:leading-6 focus-visible:outline-none focus-visible:bg-gray-200 group-hover/multi-select:bg-state-base-hover-alt ${disabled ? 'cursor-not-allowed' : 'cursor-pointer'}`, className)}>
+            {selectedItems.length > 0
+              ? (selectedItems.map(item => (
+                <span key={item.value} className="inline-flex items-center m-1 px-2 py-1 rounded bg-gray-200">
+                  {item.name}
+                  <XMarkIcon
+                    className="ml-1 h-4 w-4 text-gray-400 cursor-pointer"
+                    onClick={(e) => {
+                      e.stopPropagation()
+                      removeItem(item)
+                    }}
+                  />
+                </span>
+              ))
+              )
+              : (
+                <span className="text-gray-400">{localPlaceholder}</span>
+              )}
+            <span className="absolute inset-y-0 right-0 flex items-center pr-2">
+              <ChevronDownIcon
+                className="h-4 w-4 text-text-quaternary group-hover/multi-select:text-text-secondary"
+                aria-hidden="true"
+              />
+            </span>
+          </Listbox.Button>
+        )}
+
+        {!disabled && (
+          <Transition
+            as={Fragment}
+            leave="transition ease-in duration-100"
+            leaveFrom="opacity-100"
+            leaveTo="opacity-0"
+          >
+            <Listbox.Options className={classNames('absolute z-10 mt-1 px-1 max-h-60 w-full overflow-auto rounded-md bg-white py-1 text-base shadow-lg border-gray-200 border-[0.5px] focus:outline-none sm:text-sm', optionWrapClassName)}>
+              {items.map((item: Item) => (
+                <Listbox.Option
+                  key={item.value}
+                  className={({ active }) =>
+                    classNames(
+                      `relative cursor-pointer select-none py-2 pl-3 pr-9 rounded-lg hover:bg-gray-100 text-gray-700 ${active ? 'bg-gray-100' : ''}`,
+                      optionClassName,
+                    )
+                  }
+                  value={item}
+                >
+                  {({ selected }) => (
+                    <>
+                      {renderOption
+                        ? renderOption({ item, selected })
+                        : (
+                          <>
+                            <span className={classNames('block', selected && 'font-normal')}>{item.name}</span>
+                            {selected && !hideChecked && (
+                              <span className="absolute inset-y-0 right-0 flex items-center pr-4 text-gray-700">
+                                <CheckIcon className="h-5 w-5" aria-hidden="true" />
+                              </span>
+                            )}
+                          </>
+                        )}
+                    </>
+                  )}
+                </Listbox.Option>
+              ))}
+            </Listbox.Options>
+          </Transition>
+        )}
+      </div>
+    </Listbox>
+  )
+}
+export { SimpleSelect, PortalSelect, MultiSelect }
 export default React.memo(Select)
diff --git a/web/app/components/header/account-setting/model-provider-page/declarations.ts b/web/app/components/header/account-setting/model-provider-page/declarations.ts
index 8a84376bea..9342182dd4 100644
--- a/web/app/components/header/account-setting/model-provider-page/declarations.ts
+++ b/web/app/components/header/account-setting/model-provider-page/declarations.ts
@@ -11,6 +11,7 @@ export enum FormTypeEnum {
   textNumber = 'number-input',
   secretInput = 'secret-input',
   select = 'select',
+  multiSelect = 'multi-select',
   radio = 'radio',
   boolean = 'boolean',
   files = 'files',
diff --git a/web/app/components/header/account-setting/model-provider-page/model-modal/Form.tsx b/web/app/components/header/account-setting/model-provider-page/model-modal/Form.tsx
index c0a7be68a6..d2a8c4e11c 100644
--- a/web/app/components/header/account-setting/model-provider-page/model-modal/Form.tsx
+++ b/web/app/components/header/account-setting/model-provider-page/model-modal/Form.tsx
@@ -14,7 +14,7 @@ import { FormTypeEnum } from '../declarations'
 import { useLanguage } from '../hooks'
 import Input from './Input'
 import cn from '@/utils/classnames'
-import { SimpleSelect } from '@/app/components/base/select'
+import { MultiSelect, SimpleSelect } from '@/app/components/base/select'
 import Tooltip from '@/app/components/base/tooltip'
 import Radio from '@/app/components/base/radio'
 type FormProps = {
@@ -53,7 +53,7 @@ const Form: FC<FormProps> = ({
   const language = useLanguage()
   const [changeKey, setChangeKey] = useState('')
 
-  const handleFormChange = (key: string, val: string | boolean) => {
+  const handleFormChange = (key: string, val: string | boolean | any[]) => {
     if (isEditMode && (key === '__model_type' || key === '__model_name'))
       return
 
@@ -220,6 +220,44 @@ const Form: FC<FormProps> = ({
       )
     }
 
+    if (formSchema.type === 'multi-select') {
+      const {
+        options,
+        variable,
+        label,
+        show_on,
+        required,
+        placeholder,
+      } = formSchema as CredentialFormSchemaSelect
+
+      if (show_on.length && !show_on.every(showOnItem => value[showOnItem.variable] === showOnItem.value))
+        return null
+
+      const handleMultiSelect = (selectedItems: any[]) => {
+        handleFormChange(variable, selectedItems.map(item => item.value))
+      }
+
+      return (
+        <div key={variable} className={cn(itemClassName, 'py-3')}>
+          <div className={cn(fieldLabelClassName, 'flex items-center py-2 text-sm text-gray-900')}>
+            {label[language] || label.en_US}
+            {required && <span className='ml-1 text-red-500'>*</span>}
+            {tooltipContent}
+          </div>
+          <MultiSelect
+            className={cn(inputClassName)}
+            disabled={readonly}
+            selectedValues={value[variable] || []}
+            items={options.map(item => ({ value: item.value, name: item.label[language] || item.label.en_US }))}
+            onSelect={handleMultiSelect}
+            placeholder={placeholder?.[language] || placeholder?.en_US}
+          />
+          {fieldMoreInfo?.(formSchema)}
+          {validating && changeKey === variable && <ValidatingTip />}
+        </div>
+      )
+    }
+
     if (formSchema.type === 'boolean') {
       const {
         variable,
diff --git a/web/app/components/workflow/nodes/tool/components/input-var-list.tsx b/web/app/components/workflow/nodes/tool/components/input-var-list.tsx
index e47082f4b7..fbf5d9a3f4 100644
--- a/web/app/components/workflow/nodes/tool/components/input-var-list.tsx
+++ b/web/app/components/workflow/nodes/tool/components/input-var-list.tsx
@@ -50,6 +50,8 @@ const InputVarList: FC<Props> = ({
       return 'Files'
     else if (type === FormTypeEnum.select)
       return 'Options'
+    else if (type === FormTypeEnum.multiSelect)
+      return 'Array'
     else
       return 'String'
   }
@@ -139,9 +141,10 @@ const InputVarList: FC<Props> = ({
           const varInput = value[variable]
           const isNumber = type === FormTypeEnum.textNumber
           const isSelect = type === FormTypeEnum.select
+          const isMultiSelect = type === FormTypeEnum.multiSelect
           const isFile = type === FormTypeEnum.file
           const isFileArray = type === FormTypeEnum.files
-          const isString = !isNumber && !isSelect && !isFile && !isFileArray
+          const isString = !isNumber && !isSelect && !isMultiSelect && !isFile && !isFileArray
 
           return (
             <div key={variable} className='space-y-1'>
@@ -177,6 +180,20 @@ const InputVarList: FC<Props> = ({
                   schema={schema}
                 />
               )}
+              {
+                isMultiSelect && (
+                  <VarReferencePicker
+                    readonly={readOnly}
+                    isShowNodeName
+                    nodeId={nodeId}
+                    value={varInput?.value || []}
+                    onChange={handleNotMixedTypeChange(variable)}
+                    onOpen={handleOpen(index)}
+                    defaultVarKindType={VarKindType.variable}
+                    filterVar={(varPayload: Var) => varPayload.type === VarType.arrayString || varPayload.type === VarType.arrayNumber}
+                  />
+                )
+              }
               {isFile && (
                 <VarReferencePicker
                   readonly={readOnly}