Update app.py

app.py

@@ -9,12 +9,11 @@ from Gradio_UI import GradioUI
 
 # Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
-def my_cutom_tool(arg1:int)-> str: #it's import to specify the return type
+def my_cutom_tool(arg1:int)-> int: #it's import to specify the return type
     #Keep this format for the description / args / args description but feel free to modify the tool
     """A tool that multiply 2 by a number
     Args:
         arg1: the first argument
-        arg2: the second argument
     """
     return arg1 * 2