onReleaseOutside not working

programming flash
1

Hi. When I run this nothing happens when I release outside myButton. asdfasdf! Can you help? Thx.


var my_mc:MovieClip = this.createEmptyMovieClip("myButton", 1);
myButton.attachMovie("circle", "circle1", 2)
myButton.onRelease = function(){
    trace("inside")
}
myButton.onReleaseOutside = function(){
    trace("outside")
}