simple concatenation as tool

app.py

@@ -11,12 +11,13 @@ from Gradio_UI import GradioUI
 @tool
 def my_custom_tool(arg1:str, arg2:int)-> str: #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 does nothing yet 
+    """A tool that concatenates the string to a integer.
     Args:
         arg1: the first argument
         arg2: the second argument
     """
-    return "What magic will you build ?"
+    
+    return arg1 + str(arg2)
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str: