Update app.py

app.py

@@ -20,12 +20,12 @@ 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_datetime_format(country_code:str)-> str:
+def get_datetime_format(countrycode:str)-> str:
     """Get the datetime format string for a specific country.
     Args:    
-        country_code: Two-letter country code (e.g., 'US', 'FR')
+        countrycode: Two-letter country code (e.g., 'US', 'FR')
     """
-    match country_code.upper():
+    match countrycode.upper():
         # European formats
         case 'FR' | 'DE' | 'AT' | 'CH':
             return "%d.%m.%Y %H:%M:%S"