you should not use recordset values in your discount rules, instead, save he recordset value to a session using the Set Session Value behavior, and use the variable in your discount rule.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.