Switching Body visibility from one Combined State to another

I have a  part with two bodies and multiple combined states.  I want to control visibility of one body by switching to a specific combined state. 

I have finally mangaed to do that via layers and layer states within the part. Any ideas how this might work for an assembly? 

I assembly the part with the two bodies, but have not found a way to make a body of the component persistently invisible.

Any ideas?