# Multimatte not working on VrayLightMtl & VrayCarpaintMtl **URL:** \ **Category:** Issues\ **Created:** [December 24, 2013, 9:43am UTC](https://forums.chaos.com/t/multimatte-not-working-on-vraylightmtl-vraycarpaintmtl/48204 "2013-12-24T09:43:53Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![fraggle](https://avatars.discourse-cdn.com/v4/letter/f/34f0e0/32.png) [@fraggle](https://forums.chaos.com/u/fraggle)\ **Post date:** [December 24, 2013, 9:43am UTC](https://forums.chaos.com/t/multimatte-not-working-on-vraylightmtl-vraycarpaintmtl/48204/1 "2013-12-24T09:43:53Z")
Hello, Is there an incompatibility regarding this 2 material and the MultiMatte render element? I can’t get it works, it render black instead of red/blue/green. Mat ID have been apply on the material side and MatID is check in the MultiMatte render element. Thanks ---
**Author:** ![Dariusz\_Makowski\_Dadal](https://avatars.discourse-cdn.com/v4/letter/d/c4cdca/32.png) [@Dariusz\_Makowski\_Dadal](https://forums.chaos.com/u/Dariusz_Makowski_Dadal)\ **Post date:** [December 24, 2013, 3:07pm UTC](https://forums.chaos.com/t/multimatte-not-working-on-vraylightmtl-vraycarpaintmtl/48204/2 "2013-12-24T15:07:21Z")
Heya Silly question but u did specify mateID number right ? 1/2/3 and same on multimatte? Everything should work as far as I tested last night. ---
**Author:** ![fraggle](https://avatars.discourse-cdn.com/v4/letter/f/34f0e0/32.png) [@fraggle](https://forums.chaos.com/u/fraggle)\ **Post date:** [December 24, 2013, 3:20pm UTC](https://forums.chaos.com/t/multimatte-not-working-on-vraylightmtl-vraycarpaintmtl/48204/3 "2013-12-24T15:20:57Z")
Thanks, yes I triple check. Using 3.x, could be a bug. ---
**Author:** ![Dariusz\_Makowski\_Dadal](https://avatars.discourse-cdn.com/v4/letter/d/c4cdca/32.png) [@Dariusz\_Makowski\_Dadal](https://forums.chaos.com/u/Dariusz_Makowski_Dadal)\ **Post date:** [December 24, 2013, 3:42pm UTC](https://forums.chaos.com/t/multimatte-not-working-on-vraylightmtl-vraycarpaintmtl/48204/4 "2013-12-24T15:42:37Z")
Interesting. Could you try new scene fresh settings maybe? ---
**Author:** ![tashko.zashev](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/tashko.zashev/32/275280_2.png) [@tashko.zashev](https://forums.chaos.com/u/tashko.zashev)\ **Post date:** [December 27, 2013, 7:59am UTC](https://forums.chaos.com/t/multimatte-not-working-on-vraylightmtl-vraycarpaintmtl/48204/5 "2013-12-27T07:59:43Z")
Hi Fraggle and Dedal, Merry Christmas! Actually yes, CarpaintMtl doesn’t work with the Multimatte material ID’s in the latest beta. I will add this bug in our system. Thank you for the report. In the meantime you could use the Object ID option instead. About the LightMtl, would it be possible to send us a scene. In my tests everything works fine, but may be there is a setup where it doesn’t. ---
**Author:** ![vlado](https://avatars.discourse-cdn.com/v4/letter/v/779978/32.png) [@vlado](https://forums.chaos.com/u/vlado)\ **Post date:** [December 27, 2013, 2:56pm UTC](https://forums.chaos.com/t/multimatte-not-working-on-vraylightmtl-vraycarpaintmtl/48204/6 "2013-12-27T14:56:11Z")
These are fixed already for the next build. Thanks for the report! Best regards, Vlado ---
**Author:** ![fraggle](https://avatars.discourse-cdn.com/v4/letter/f/34f0e0/32.png) [@fraggle](https://forums.chaos.com/u/fraggle)\ **Post date:** [December 28, 2013, 4:39pm UTC](https://forums.chaos.com/t/multimatte-not-working-on-vraylightmtl-vraycarpaintmtl/48204/7 "2013-12-28T16:39:26Z")
Here is the scene witht he selfIllum not working with Multimatt. -max 2014 & Vray 3.05.03 (not yet upgrade to the last built) This scene was create to practice compo in Nuke. [SelfIllu\_Multimatt\_trouble.zip](https://forums.chaos.com/uploads/short-url/7pDIPYAzRcNbz1WzWGwhvpt9DVV.zip) (1.11 MB) ---
**Author:** ![tashko.zashev](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/tashko.zashev/32/275280_2.png) [@tashko.zashev](https://forums.chaos.com/u/tashko.zashev)\ **Post date:** [December 30, 2013, 7:46am UTC](https://forums.chaos.com/t/multimatte-not-working-on-vraylightmtl-vraycarpaintmtl/48204/8 "2013-12-30T07:46:54Z")
> [@fraggle](#): > > Here is the scene witht he selfIllum not working with Multimatt. -max 2014 & Vray 3.05.03 (not yet upgrade to the last built) > This scene was create to practice compo in Nuke. Thank you for the scene. If you update to the latest (latest Beta 3.05.04) build, this scene setup with Light Mtl and Multimatte should work fine. ---
**Author:** ![fraggle](https://avatars.discourse-cdn.com/v4/letter/f/34f0e0/32.png) [@fraggle](https://forums.chaos.com/u/fraggle)\ **Post date:** [December 30, 2013, 10:03am UTC](https://forums.chaos.com/t/multimatte-not-working-on-vraylightmtl-vraycarpaintmtl/48204/9 "2013-12-30T10:03:26Z")
> [@tashko.zashev](#): > > Thank you for the scene. > If you update to the latest (latest Beta 3.05.04) build, this scene setup with Light Mtl and Multimatte should work fine. Right, it has been solve. Thanks