VRAY HDRI animate render mult or overall mult

Hello,

Did someone know why we can’t animate render mult or overall mult inside VRAYHDRI?

I would simulate this animation: at frame 0: one object light + light from HDR environment at render mult 1.0, and 25 frames later, one object light + light from HDR environment at render mult:0.0. In fact at the end of animation, i just want object light without light from HDR.

As we need to have GI for rendering object light, what can i do for this animation?

Thanks and sorry for my english,

Rudolph.

could we utilise standart bitmap HDRI

Could we utilise standart bitmap HDRI with spherical environment for GI environment instead of VRAYHDR ?

It seems ok with Mix material… not really intuitive for this simple material animation !