how to update parameter in vex builder level?

[PengZhang 0]

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.

[PengZhang 0]

oops...here is the file.

get_parameter_for_DA.hip