Scotty's Elastic Curved resizement keep centered help please

I followed the instructions for scotty’s elastic curved resizement box found here…

Is there any way to keep the box centered with a listener? I tried with this…

 sizeListener = new Object();
sizeListener.onResize = function() {
bBox._x = Stage.width/2;
bBox._y= Stage.height/2;
}
Stage.addListener(sizeListener);

but I get wierd results. The bBox looks like it trying to be center but the coordinates are way off, down to the lower right. Any help would be greatly appreciated :slight_smile:
Thanks,
Rich