vray instance ID problem

[Vance]

I am trying to use  the new instance ID operator with some tyactors and I'm running into a problem.

I've attached an image that shows what happens.   

Basically I have a multisub material applied to the source geo and the tyflow system itself

Material 2 has a vraymultisub set to use vrayinstance id.  Its being added with a color transform function over the top of the original material color through a composite map to add variation

when the actor is just a plane, the particles render correctly with material 2 getting some variation

but when the actor is a rigged character it ignores the material variation.

thanks,

V Miller