Hi John, thanks for answering the question. One more question about this node, when I set the map range minimum lowend for the AO node, the change does not seem like linear change. The 0.1-0.9 change was minimal, the 0.9-1 change is massive, like 20% for 0.1-0.9, 80% for 0.9-1. May I know where went wrong for the model?