As far as "how convoluted it can get", that's just my process. I like to use targetGeom because it's an actual morph parm, in the body. I've encountered some snafus related to valueParm and pmd injection etc in the past. It's just my workflow that I've developed that seems to be reliable across various scenarios. If it works as they say. I'm sure someone like Nerd could clarify and correct my assumptions. Because 9 times out of 10 that's all you'll ever get are assumptions in relation to this stuff. It's not really documented and you're at the mercy of a handful who might actually know. My method has become experiment until it works reliably across various scenerios. There's some really strange bugs that I've discovered recently about unimesh as opposed to classic, figure construction, and rendering the same in Firefly and Superfly and wildly different results therein that are quite mysterious, and very situational... but that's a story for another time.

Sorry for the hijack.