How to set up Heat Haze/Mirage in Vray?

[Viacheslav]

Hi everyone, I'm looking to make desert heat haze/Mirage(when looking at a distance there is a distortion that creates a reflection on the ground of the distant object). Fumefx Tutorial n10 touches on the subject, but it's a scanline workflow which in my case does not work. I'd like to know to set up heat haze effect in Vray. Here is a reference from Vray documentation (scroll down to see the effect, "example heat haze")
https://docs.chaos.com/display/VMAX/Ren ... t-heatHaze

This is what I'm aiming for:
https://www.youtube.com/watch?v=-01sSjs132Y