For sc_req_item and sc_task, I know that I can use variables from catalogue requests in filters and report columns. The variables field is on the task table, and therefore is present on all tables that extend task. For task table records, such as incident, the variables field is populated from the record producer variables.
Is it possible to filter on the variables field on task tables other than sc_req_item and sc_task, and what needs to be done to enable filtering on variables?
