Update app.py

app.py

@@ -106,7 +106,7 @@ def respond(message, history: list[tuple[str, str]], system_message):
     # Ejecutar el assistant
     with client.beta.threads.runs.stream(
         thread_id=thread_id,
-        assistant_id=assistant_id
+        assistant_id=ASSISTANT_ID
     ) as stream:
         
         response = ""