Update app.py

app.py

@@ -228,7 +228,7 @@ def chat_with_assistant(user_input, chat_history, bot_id, workspace_id, temperat
       "messages": messages,
       "temperature": temperature,
       "debug": False,
-      "reasoning": { "budgetTokens": 1024 } 
+      "thinking": { "budgetTokens": 1024 } 
     }
   }