Membership Plugin - Customized Form details in PayPal receipt

ISSUE: I sign up online at: http://ubra.org/WP/signup/ and then choose an subscription and then my information from the signup page does not appear in the PayPal description, so I don’t receive the information with the order and have no idea what member was paid for. (Even thought I have it programmed to renew the membership online correctly with their subscription.) I need to record it in my accounting books… What do I do to be able to see our details on our PayPal receipt?