Update app.py

app.py

@@ -19,7 +19,7 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
     return "What magic will you build ?"
 
 @tool
-def get_current_time_in_timezone(timezone: str) -> str:
+def get_current_time_in_timezone(timezone: str) -> int:
     """A tool that fetches the current local time in a specified timezone.
     Args:
         timezone: A string representing a valid timezone (e.g., 'America/New_York').