You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "update_level", "description": "Updates the difficulty level of a specific riddle using the Riddle API.", "parameters": {"is_id": {"description": "The unique identifier of the riddle to be updated.", "type": "str", "default": "63bdef027183b71946b64ee6"}, "level": {"description": "The suggested difficulty level of the riddle. Can be \"0\" (Easy), \"1\" (Medium), or \"2\" (Hard). Defaults to \"1\".", "type": "str, optional", "default": "1"}}}]
Please help me set the difficulty of riddle 'T23456' to hard.
user
assistant
[{"name": "update_level", "arguments": {"is_id": "T23456", "level": "2"}}]