Rules Roles and Flags

I am SO close it hurts. I have a flag on my node/#submission/#/edit page that only admin can access. I need to assign a role to the user who created the submission when the admin clicks the "approved" flag. I get all the way to "User whos roles should be changed" and the only user option is the flagging user. Does anyone know how to get the submitting user in this drop down box, so that the person who submitted the form's roles might be changed on approval?

Thanks!