The problem is the expression i use. In this rig, i want to rotate upper leg (1)with the rotation feet Null (2). The expression i used were good, but when i do rotation with Null Object body(3), the bone in upper leg cumulate rotation of (3) and (2).
I explain all in this page >> http://dg1dave.free.fr
I placed in : LW files and a little vidéo example.
Thanks for all :p :beer: