Yeah, that's why I said that wouldn't work - Admins and moderators will have more than one group in their profile. Use the code I posted above using strstr.
Donate to UBBDev today to help aid in Operational, Server and Script Maintenance, and Development costs.
Please also see our parent organization VNC Web Services if you're in the need of a new UBB.threads Install or Upgrade, Site/Server Migrations, or Security and Coding Services.