Works fine for me. Are you sure you have your syntax correct? Are you populating the revision field in the part?
Jeff, - Thanks so much for checking it out. Your comment prompted me to make a new drawing with the same drwdot and slddrt and a different part and the Rev field populated fine. So, I created a new drw of the same part that I sent and the field behaved perfectly. In the old (now deleted) drw file, I could even make a new note (either on the sheet or in the sheet format - didn't matter) and all props would show fine, but the Revision prop would not show up. It does now - I just needed to start over.
The only thing I can think of is that this part and drawing was used to create the drwdot and slddrt... Somehow that field got corrupted.
I guess stranger things have happened in the CAD world... Thanks again for your efforts!