Interaction Scripter Developer's Guide
When declared within the handlers and changed in the Scripter, tagged information is mapped and updated in the database as follows:
All variables named IS_Attr_ are sent to the server for update to the database. Any variables that do not have a corresponding database column are discarded at the time of update. If the client needs additional information from another database, we recommend that the client query it from an Active Server or Cold Fusion server rather than delaying the primary data pop to the client.