playing timeline in reverse in different scenes

[joshua1978]

I know variations of this have been discussed, but I cant seem to find any resolve for my particular scenerio. Code below works fine within main timeline, does not work with-in different scenes-code will make each scene play in reverse, than stop at designated frame number once it reaches the MAIN timeline only while surpassing same frame number in anything outside of main timeline.

On main timeline:

stop();
myButton.onRelease = function()
{
this._parent.onEnterFrame = function()
{
this.prevFrame();
if (this._currentframe == 2)
{
delete this.onEnterFrame;
}
};
};

On Movie Clip:

onClipEvent (enterFrame) {
if (playingBackwards) {
if (_currentframe>stopFrame) {
prevFrame();
} else {
playingBackwards = false;
}
}
}

Hoping for Insight/Input..Pulling my hair out over this thing