MultiMatteElement and Vray Blend material, MatID not being processed

[s-v]

Hello dear Chaos Group and members,
I recently discovered an issue in V-ray Adv 1.50.SP5 by combining MultiMatteElement and Vray Blend material, which I would like to share.

As I set Material IDs of the coats of the Blend material, only the main MatID of the Blend material is being processed to a alpha channel. The MatIDs of the coats are not rendered as masks by the MultiMatteElement (or PSD manager).

I would be very happy if someone may give any solution to this issue or workarounds?

Tools: 3D Max Design 2011 + Vray Adv 1.50.SP5

Thank you in advance,
Best regards

[R2J2]

I'd really like that to work as well