Video translation API: how to set "mode" for Proofread flow?

Hi,

I want to use the API to translate videos via the Proofread feature. I plan to use these 2 POST endpoints:

https://api.heygen.com/v2/video_translate/proofread

and

https://api.heygen.com/v2/video_translate/proofread/{proofread_id}/generate

According to API docs, none of them seem to accept the "mode" parameter, which is available for https://api.heygen.com/v2/video_translate (i don't think I need this endpoint).

Is the "mode" parameter also available for the proofread video translate call?

Thank you and best regards,

Alex