Help! I'm VERY new to Vray and I can create a scene and create vray materials and lights, but I cannot seem to create a luminosity material that when applied to an object, acts as a light in the scene. In the Vray Advanced Material, I figured that it is what the 'luminosity layer' does, but it seems to not work. All my render settings are fine (I suspect, as everything else in the scene renders as expected). I tried adding a VrayLight tag to the object and that didn't work either. Please help!