Access local space transform vector in material layer?

Hello,

I’m curious if anyone can help me figure out how to access the local space transform vector in a material layer?

I’ve got a material that is utilizing the TransformVector to find the forward vector, then using that to rotate world aligned UVs. That works great, but after moving that into a material layer utilizing a layer stack its not working.

I’m having trouble finding documentation/posts if this is possible. I figure maybe there’s a way to feed the vector in from the master material but not sure how? Thanks!