I'm trying out sIBL_image_based_lighting with Vray in Softimage, using vray materials. I am trying to increase the GI effect. I can increase reflections and refractions of the vray env in the pass shader but increasing the multiplier of the the GI environment in the pass shader doesn't do anything. If I increase the light's multiplier, the light areas in the scene lighten but the dark areas remain dark. What am I doing wrong? 