[FMX04]Need help on storing multiple _x at runtime

Hallo ,
i am developing a photogallery with picts of different width.
there’s nothing with it,but i am trying to make an element which is more of a design nature.
So i have an invisible mc/say “bbb” which is duplicated each time a new photo is loaded
and its _x depends on the photos _width and the distance between the photo and the end of the screen regulates how many times “bbb” is duplicated.So on every new photo i got /possibly/ diferent number of instances with diferent _x.Still no poblem.But i want to put an
bbb_dups.onRollOver=func(){if (this._x=curr_x){ tween(this._x+30)}else if (this._x=curr_x+30){ tween(backto curr._x)} so i need somehow to store each instances curr._x after the duplication which i dont know how.
i’ve tried with an array but it doesn’t seem to work for all the instances.