Dynamic text background in templates

I am trying to create a template with text overlaid on a solid white background, in the middle of the avatar video. The text will change for each video and will be updated via an API. Because the text length will vary, the white background needs to adjust dynamically to fit the text each time. Is this currently possible with heygen templates? If not, could we please get this added? As I think it would be a very easy feature to implement.