[support] User Role from User Points

Hello All, Can someone kindly share the rules code for assigning a particular role when an authenticated user attains certain user points? I have been working to create the code for past 10 days but with no success. I have also tried 'Userpoint Contributed Module' but it does not work as the codes are still not ported to D7. Many thanks for your help. Quaid J. Surti