Help with making a button script

Hi.

If I'm understanding what you want, you need to store the final frame of your animation in a property or variable. Then when the user presses the button, you change the value of this property or variable. Like this:

HTML5 Canvas:

Main timeline / frame 1 (0):

var root = this;

root.endFrame = 9; // in HTML5 documents the first frame index is 0 so the 10th frame index is 9

root.stopLoop = function(e)
{
	root.endFrame = 19;
};

root.yourButton.on("click", root.stopLoop);

Main timeline / frame 10 (9):

this.gotoAndPlay(this.endFrame);

AS3:

Main timeline / frame 1:

import flash.events.MouseEvent;

var endFrame:uint = 10;

function stopLoop(e:MouseEvent):void
{
	endFrame = 20;
}

yourButton.addEventListener(MouseEvent.CLICK, stopLoop);

Main timeline / frame 10:

gotoAndPlay(endFrame);

Please let us know if this is what you want.

Regards,

JC