Scale a rectangle from center

[belo]

hello,

i have a simple rectangle.
i would like to scale it to 200 but the scaling always begins from top-left corner of the rectangle.
how can i scale it from the center?
thank you!

rect.onPress = mousePress;
rect.onRelease = mouseRelease;
function mousePress():Void {
    var item:MovieClip = this;
    item._xscale = item._yscale = 200;
}
function mouseRelease():Void {
    var item:MovieClip = this;
    item._xscale = item._yscale = 100;
}

[gparis]

set its registration points centered, in other words center the shapes in it.

gparis

[belo]

can you please show me what you mean. i have attached a test.fla

[flashpipe1]

No attachment there, but, if you double click on your symbol, select it and use the "Align" panel (select "To stage") and center it horizontally and vertically, that should set the registration point to the center and it will scale from that point...
Hope that helps!