gemini-2.0-flash-thinking-exp

Hi, I tried to add the gemini-2.0-flash-thinking-exp model as a custom model because it's not available in the existing models list yet, but it throws the error below. How do I resolve this?  

[ERROR] Unable to call the gemini-2.0-flash-thinking-exp inference endpoint due to 400.  Please check if the input or configuration is correct. 400 Invalid JSON payload received. Unknown name "messages": Cannot find field.
Invalid JSON payload received. Unknown name "max_tokens": Cannot find field.
Invalid JSON payload received. Unknown name "temperature": Cannot find field.
Invalid JSON payload received. Unknown name "top_p": Cannot find field.
Invalid JSON payload received. Unknown name "presence_penalty": Cannot find field.
Invalid JSON payload received. Unknown name "frequency_penalty": Cannot find field.
Invalid JSON payload received. Unknown name "stream": Cannot find field.