background reflects in matte objects, matte material for background?

He guys,

another question. Is it possible to give your background a sort of matte material? For example the vray sky.
I made vrayMTLwrappers for all the excisting objects in my scene, now I do need the reflections of the new objects added to the scene in the buildings but not the reflections of the background.

Am i making sense?

Throw your Vray sky into the environment sky override and make your background/environment black…but without anything to reflect your reflections won’t look to crash hot.
For a quick fix you could also try throwing your existing image into the background/environment slot and set to screen.