How to create a video from a template v4 using API?

Hi HeyGen Support,

I created a template using the New AI Studio (V4) and I'm trying to use it via the API to generate videos programmatically, but it doesn't seem to be supported.

The template is visible in my account but it doesn't show up when I call the List Templates endpoint, and calling the Get Template endpoint returns "not found".

Is it currently possible to use New AI Studio (V4) templates via the API? If yes, could you point me to the correct endpoint or documentation?

Thank you!