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Hi,guys, I am trying to build a digital asset here,It's a asset inside shader,I mean it's at vex builder level. And now I want there to be some parameter which link to a rotation of an object level camera. Because the rotation keep changing,so I must like write a expression for the parameter of the DA. And here is the problem,it seems that I can't write expression at vex builder level,it does not update. I know I can promote parameter to shader level,but I do want to keep it at my digital asset which is at vex builder level. So,how can I get that changing data and make it work for my digital asset? I did some test,maybe someone can check my test scene(houdini14) and help. Thank you guys. Peng.