How can I add description to form field using form_args?

[sorix6]

Hi, I am trying to add a comment to a field in my form, something like a help text. According to Wtforms, the description parameter should allow that but it does not seem to work in SQLAdmin.
This is what I've tried:
form_args = {"active": {"description": "whether the user is active or inactive"}}

Any ideas if this should be working or what am I doing wrong?
Thank you