how to work correctly with metalness?

[PablonchoWorks]

I already tried everything, but my metalness map has no effect on the materials.
How is the correct use of this channel?
Thanks!

[leandro_cs]

Metalness is a Vray Next feature, so be sure you're using the right vray version.

https://docs.chaosgroup.com/display/CWVRAYMAX/Metalness

[PablonchoWorks]

yes, I used vray 3.6.
thanks!