[3D] How to set "hitEnabled" to "False" ?

!Hello, I want to select an object  behind  plates.

Specifically, I want to select a piping component behind transparent plate.

So I need to set the nodes's property "hitEnabled" to "False".

Is that the right approach ?

then, how to set it False? this is my code:

c3d = this.getAnnots3D(0)[0].context3D;

thePlate = c3d.scene.nodes.getByname("Plate");

myPlate.hitEnabled =false;

I tried it in the console, but no change.Clicking on Photo in T

Please help me with this.