Problems with adding second keyframe

1

Hi.
I separated code from .fla file.
And try to create 2 keyframes.
But after adding 2 keyframe i have problem.
Maybe because need say stop(); ?
I tried say stop(); on first keyframe and on .as file, but its not help.
Can anyone explain what the problem?

package {
    import flash.display.Sprite;
    import flash.text.TextField;
    import flash.display.*;
    import flash.events.*;

    public class Example extends Sprite {
        public function Example() {
            myTest();
            //stop();
        }
        //MovieClip.stop();
        private function myTest():void {
            var eighteen:int=18;
            var age2:int;
            
            tField.htmlText="How old are you?:";
            tField.width=200;
            //tField2.htmlText="Girls page here:"
            //tField2.width=200;

            goBtn.label="Go";
            //backBtn.label="< Back"

            goBtn.addEventListener(MouseEvent.CLICK, go);
            function go(event:MouseEvent):void {
                trace("button clicked");
                age2=int(age.text);
                if (age2>=eighteen) {
                    trace("big");
                    //gotoAndStop('p2');
                }else {
                    trace("small");
                    rez.htmlText="you are still small:(";
                }
            }
        }
    }
}