Why does not vertical illuminance map work? I have a 6 story building which I don't want to place an individual illuminance map for every single floor. Instead I wanna put all of em in a thermal zone and add a vertical illuminance map in it (close to the facade) in order to see the light reflections off diffuse surfaces. But when I do it in sketchup, close and reopen the geometry again, the map is gone! Is that even logical to do so or is my idea basically stupid?
Thank you
