I didnt get the point with CSS Plugin due to given example on documentation handles straight the x-position.
Nevertheless I got it to work by manipulating the attributes of the vars object.
I changed the tweening method from to() to fromTo() In order to be able to adapt the starting values as well.
Finally I ended up in the following code
for(var key in this.oTweenElement) {
//I) set FROM if given
if(this.oTweenElement[key].tween.vars.startAt!==undefined) {
this.oTweenElement[key].tween.vars.startAt.x=iXFrom;
}
//II) set TO dependend of status
if(true===this.oTweenElement[key].tween._initted) {
this.oTweenElement[key].tween.vars.css.x=iXTo;
} else {
this.oTweenElement[key].tween.vars.x=iXTo;
}
}
Thanks a lot!