Sticking an ICE tree on a mesh and then getting the kine.global, updating it, and setting the kine.global doesn’t really work. And I’m not sure it should. Between ICE optimizations and the way the XSI evaluation model works, I don’t think you’ll get consistent updates. SCOPs are similar, but they have that Always Evaluate flag to force evaluations.
Second attempt. I also have an ICE Tree in the Modeling region that initializes self.tmp.