VRay 3 - Why cant I rotate the background HDRI

Hi

Thick questiion number 2.

I have inserted a dome light with HDRI, and made the sun/sky invisible and unenabled. My model now has HDRI light.

Under Dome Light > Options > I make invisible. The background is now black, but my model gets the same HDRI light.

Under ‘Environment’ > 'Backgorund I attach the same HDRI and make sure UVW is set to Environment, Spherical. The HDRI appears in the background of my model once again.

In the same Environment Background options I change the Horizontal rotation number, my sky stays exactly in the same place. It does not rotate.

Please, what am I doing wrong, to make the background image rotate? Or is it locked to the domelight?

…this is fixed now. I had Aerial Perspective on which was hiding everything.