VRayMtlWrapper material's reflection has no color. I think it looks just alpha matte

[doseok_park]

Hello.
I have a problem to using wrapper material.
The problem is Reflection. When I use the wrapper material, the shadow is fine, but the reflection looks black and white. not colored.
I think it's reflected mask of the object.
If I use VrayMtl, the reflection is fine and colored. but I can't get Alpha channel.
I'll attach a picture. If anyone knows the solution, please reply.

[Morbid Angel]

I believe you need to switch in vray material reflection to affect color+alpha before you will see it in the reflection and alpha channel together. Here I've attached a quick scene. In order to get a clean alpha of the reflection you must have frenel off or else it will mix back with the diffuse even if diffuse is completely black.

[doseok_park]

Morbid Angel, Thanks for your help.
I switched to color+alpha, but there is no difference. I don't know why...
can you send me your file directly.
because I can't download your attached file. I think it's broken or some networking issues.
my e-mail is 'parkdoseok@naver.com'
thank you for your kindness.