I am creating a new registration form with the Fields UI module and need to be able to add variable_get instances for username, email, etc and also add select lists for birthday info, typical drop downs like range(1,12), range(1,31), and range(2015,2012). I'm having trouble trying to figure out how to do this, or how to put preset variables into my fields. Can I dump this and edit it myself, or can I put in what I need?
I found out that I can use list(int) then select widget type select list to create select boxes, BUT I still cannot assign things known variables.
To further this along, lets say I have I have $variables['bio']['firstName'], I am trying to assign name_bio_firstName to the field for name, if that doesn't confuse anyone more.