data studio got confused by original_file_name

data_store.py

@@ -32,7 +32,7 @@ def upload_data(audio: str | Path, user_text: str, model_response: str):
         "user_message": user_text,
         "model_response": model_response,
         "file_name": "audio/" + data_id + suffix, # has to be relative to metadata.jsonl
-        "original_file_name": os.path.basename(audio),
+        "original_fn": os.path.basename(audio),
         "id": data_id,
     }