Simple expression to duplicate the same property from another layer's value (property value linking)..?

Hi,

I am using Element 3D and have two 3D layers. I want to link the World Transform values XYZ Positions, Scale and Rotations.

Is there a simple expression, something similar to thisValue.sameAs("Layer 1") ?

I am assuming it might be tricky to find the names of Element3D's unique properties for use in expressions.