This used to work for us, but I must have broke it! We have a workflow that increments the revision when we go the Released state, this used to update the Revision custom property on the part, assembly, and drawing, which updated the title block. Now, it increments/creates the custom property on the part and assembly, but not the drawing, therefore the title block does not update. I've checked the variable mapping, and I have Custom Property mapped to Revision, with all three (sldprt, sldasm, slddrw) extensions, and $PRPSHEET mapped to Revision, with all three extensions. What am I missing?