Update app.py

app.py

@@ -17,7 +17,7 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
         arg2: the second argument
     """
     search=DuckDuckGoSearchTool()
-    result=search.run(arg1)
+    result=search.run(arg1, max_results=3)
     return result
 
 @tool