Rodrigo, thanks for your reply!
I solved! The problem was just in scroll plugin that I use in my project (scrollMagic), tweenTo play the animation ma don't update the scroll position.
I solved with this two function:
function goToLabel(timeline,label){
timeline.tweenTo(label);
}
function setScroll(controller,val){
controller.scrollTo(val);
}
unfortunately the solution isn't responsive, have you other tricks?