Rectangular light not invisibl

Hi
I am now better with interior lights but I am having issues. I thought the point of rectangular lights and “invisible” was not to see the light source. But it is a white rectangle which creates a lot of work to hide it later. Does anyone know why it is not actually invisble?

Vray 3 beta?

Problem solved, it was a very stupid mistake, admin, please take away the thread if possible!