Add username to filename

[Muut]

Is there a way to add the {{ grav.user.username }} to the filename or prefix of a form post?

I was wondering if the form template could output something when the post is generated, was trying with the form.md prefix: initially. Pic Below:

Filename

[Muut]

Please add this as an issue/request here: https://github.com/getgrav/grav-plugin-form/issues