The value in initValue is what it goes to if you hit Restore If you want to experiment, but 0.25 is where you want it to go by default, then making initValue = 0.25 could be a short cut to undoing the experiment. Actually, this might be all you need for a pose file = { version { number 4.01 } light LIGHT1 { channels { kdIntensity INTENSITY { keys { k 0 0.25 } } } } } The theory being, don't affect things you do not need to. In the previous one, if you had changed initValue to 0.25, and then used that pose file, it would abolish all your work and reset it to 1.0