bug fix

app.py

@@ -354,10 +354,11 @@ def update_is_multiimage(event: gr.SelectData):
     return gr.update("true" if event.index == 1 else "false")
 
 def toggle_multiimage_visibility(choice: str):
-    if choice == "true":
-        return gr.update(visible=True), gr.update(visible=False)
-    else:
-        return gr.update(visible=False), gr.update(visible=False)
+    show = choice.lower() == "true"
+    return (
+        gr.update(visible=show),   # uploaded_api_images
+        gr.update(visible=show)    # multiimage_prompt  (Gallery)
+    )
 
 
 with gr.Blocks(delete_cache=(600, 600)) as demo:
@@ -407,10 +408,11 @@ with gr.Blocks(delete_cache=(600, 600)) as demo:
             uploaded_api_images = gr.Files(file_types=["image"], label="Upload Images")
             multiimage_combined = gr.State()
 
-            is_multiimage.change(
+            is_multiimage.change(                  
                 fn=toggle_multiimage_visibility,
                 inputs=is_multiimage,
-                outputs=[uploaded_api_images, multiimage_prompt]
+                outputs=[uploaded_api_images, multiimage_prompt],
+                trigger_mode="always"
             )
             
             with gr.Accordion(label="Generation Settings", open=False):