Out of the many posts, this one attract my attention. I believe it is possible for anyone to participate.Got that sir, but having problem in hiding and showing alternatively.
Ur statement was,
"Now in DMU you set up a visibility action on each of the springs, one to hide and one to show (make sure you do them in order otherwise you end up with a nightmare later on). Put all the springs into noshow except the first spring of the animation"
How to get access to visibility action, I'm yet another kid in CATIA, so let me know this thing.