Adding a Prefix to All RefDes Within a Schematic Page(Concept HDL 16.5)

Hello,

I need to add a prefix to all refdes within a schematic page and I cannot figure out how to go about it.  I'm fairly new to Concept HDL, but have quite a bit of experience using DxDesigner.  In DxDesigner, I can edit the schematic text via a script to implement this task, but with Concept HDL adding a prefix isn't so straight forward.  When I edit the .csa files in an attempt to add a prefix, and then re-read the schematic page in Concept, all of the refdes change to a red color, but no prefix.  Hopefully someone here can point me in the right direction.

Thanks.