Obscuration problem with particular

Hello.
Basically, I have a champagne cup created in C4D and then transfered as an obj file into Element 3D. There is a camera moving around the cup. I want to create a 3D stroke with Trapcode's Particular which moves in a spiral direction around it. To enable "Obscuration layer" the layer has to be 3D. But If I make my solid layer 3D, where the Element 3D is, the layer itself will get affected by the camera and I don't want that. How do i fix this? I'm trying to make what this guy in this tutorial does After Effects Tutorial - Colorful Magic Trails with Particular - YouTube  . But instead of a text I use a solid layer with element 3D there.