Update app.py

app.py

@@ -10,13 +10,14 @@ from Gradio_UI import GradioUI
 
 # Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
-def birthday_calulator(day:int, month:int, year:int)-> str: #it's import to specify the return type
+def birthday_calulator(day:int, month:int, year:int)-> int: #it's important to specify the return type
     #Keep this format for the description / args / args description but feel free to modify the tool
     """A tool that add two integers and produce integer output 
     Args:
         arg1: day of birth
         arg2: month of birth
         arg3: year of birth
+        output: age
     """
     today = date.today()
     birth_date = date(year, month, day)