We use the Events module to offer three main types of classes: adult art classes, youth art classes, and professional development workshops. Students register online. What I would like to be able to do is create Smart Groups of Participants based on the subject matter of the class, for example: painting, drawing, or portfolio review, so that we can mail to these groups and let them know about future classes they might be interested in. I created a Custom Data Field called "Class Department" with multiple choice options for the different subjects assigned to the Event types that we use for classes: Class (adult), Class (youth), and Workshop. My issue is that, having done that, I'm unable to use the "Class Department" data field as a search option in Advanced Search, even though I clicked the "is the event searchable?" box. Is this a version issue? We're still on 4.3.11. If this becomes available in later versions, what version does it first become available in?