The values of -40 and 53 can't really be changed as far as I know. The steps I gave you were just a way to open and shut the lid in one notch rotation of the dial in either direction. The use limits option will keep it from over closing/and or opening. If we were talking about morphs. It would be doable. But I don't know any way to have the numbers display 0 and 1 when it comes to Joint angles. Why does it need to read 0 and 1? One other posibility (but seems like over kill)is to make two lids. One in the closed position, and one in the open position. Then use Geometry swapping to assign it to the dials. That would end up displaying a 0(off) or 1 (on) in the value field of the dials. But that seems like a aweful lot of trouble to me. ScottA