Nomuse, you can rename a targetGeom as valueParm, but then any deltas (morph data) in the channel wont work. Most types of channel can be used as a master channel in an ERC relationship. Normally valueParm channels live in the BODY actor (though they can go anywhere), and Poser just will not save pose data for the BODY actor, wether its a valueParm, targetgeom, or anything else (unless you rename the BODY actor).