diff --git a/api/core/model_runtime/model_providers/vertex_ai/llm/llm.py b/api/core/model_runtime/model_providers/vertex_ai/llm/llm.py
index 7d2fbd087a..43385a5be1 100644
--- a/api/core/model_runtime/model_providers/vertex_ai/llm/llm.py
+++ b/api/core/model_runtime/model_providers/vertex_ai/llm/llm.py
@@ -367,10 +367,8 @@ class VertexAiLargeLanguageModel(LargeLanguageModel):
                     else:
                         metadata, data = c.data.split(',', 1)
                         mime_type = metadata.split(';', 1)[0].split(':')[1]
-                        blob = {"inline_data":{"mime_type":mime_type,"data":data}}
-                        parts.append(blob)
-                
-                glm_content = glm.Content(role="user", parts=[parts])
+                        parts.append(glm.Part.from_data(mime_type=mime_type, data=data))
+                glm_content = glm.Content(role="user", parts=parts)
             return glm_content
         elif isinstance(message, AssistantPromptMessage):
             if message.content:
@@ -438,4 +436,4 @@ class VertexAiLargeLanguageModel(LargeLanguageModel):
                 exceptions.RequestRangeNotSatisfiable,
                 exceptions.Cancelled,
             ]
-        }
\ No newline at end of file
+        }