Envoirment Pass has no Alpha

[pizzaia]

Hi,
so, I read the posts in the forum and it seems that when rendering the envoirment pass in Vray for Maya it has no alpha, so it's practically useless for further compositing. I also read that somehow the admins in this forum have maybe a way to use it for comp, or extract the alpha. I'm trying to comp a final scene with the Vray Fog, and it would be very helpfull if you could assist me getting the alpha of the envoirment pass.

Thank you!

[glorybound]

In 3DS Max you put it MAX's environment slot, along with the vray dome light, and make the vray dome light invisible. I am not sure if it is the same for Maya.