Update app.py

app.py

@@ -47,6 +47,7 @@ def update_header():
     header_buttons.clear()  # Clear the existing buttons
     for button_name in buttons_to_add:
         header_button = pn.widgets.Button(name=button_name, width=50, sizing_mode='fixed')
+        header_button.param.custom_name = button_name  # Add custom attribute to store button name
         header_button.on_click(remove_from_header)  # Add callback to remove the header button
         header_buttons.append(header_button)
 
@@ -63,7 +64,7 @@ filter_list = pn.widgets.MultiChoice(
 
 # Callback to remove the clicked header button and add it back to the filter list options
 def remove_from_header(event):
-    button_name = event.name
+    button_name = event.obj.param.custom_name  # Get the custom attribute to identify the button
     filter_list.options.append(button_name)  # Add back to the filter list options
     buttons_to_add.remove(button_name)  # Remove from the header buttons list
     update_header()  # Update the header and filter list