Quiz problem/question

Hi, I’m making a quiz. But i’m having a bit of a problem. I want the answers to go to a random position. It works for a 2 answers. But now i want to make it have 4 answers.

package {
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.events.MouseEvent;
    import flash.text.TextField;
    import flash.text.TextFieldAutoSize;
    import flash.text.TextFormat;
    public class Main extends Sprite {
        private var questionField:TextField=new TextField  ;
        private var answerField1:TextField=new TextField  ;
        private var answerField2:TextField=new TextField  ;
        private var answerField3:TextField=new TextField  ;
        private var answerField4:TextField=new TextField  ;
        private var resultField:TextField=new TextField  ;
        private var questions:Array=new Array  ;
        private var questionIndex:int=-1;
        public function Main():void {
            if (stage) {
                init();
            } else {
                addEventListener(Event.ADDED_TO_STAGE,init);
            }
        }
        private function init(e:Event=null):void {
            removeEventListener(Event.ADDED_TO_STAGE,init);
            questionField.y=150;
            answerField1.y=275;
            answerField1.x=-50;
            answerField2.y=350;
            answerField2.x=-50;
            answerField3.y=275;
            answerField3.x=50;
            answerField4.y=350;
            answerField4.x=50;
            resultField.y=300;
            questionField.selectable=answerField1.selectable=answerField2.selectable=answerField3.selectable=answerField4.selectable=resultField.selectable=false;
            questionField.width=answerField1.width=answerField2.width=answerField3.width=answerField4.width=resultField.width=stage.stageWidth;
            questionField.autoSize=answerField1.autoSize=answerField2.autoSize=answerField3.autoSize=answerField4.autoSize=resultField.autoSize=TextFieldAutoSize.CENTER;
            questionField.defaultTextFormat=resultField.defaultTextFormat=new TextFormat('Arial',18,0xffffff,true);
            answerField1.defaultTextFormat=answerField2.defaultTextFormat=answerField3.defaultTextFormat=answerField4.defaultTextFormat=new TextFormat('Arial',15,0xffffff);
            addChild(questionField);
            addChild(answerField1);
            addChild(answerField2);
            addChild(answerField3);
            addChild(answerField4);
            addChild(resultField);
            answerField1.addEventListener(MouseEvent.CLICK,answerClick);
            answerField2.addEventListener(MouseEvent.CLICK,answerClick);
            answerField3.addEventListener(MouseEvent.CLICK,answerClick);
            answerField4.addEventListener(MouseEvent.CLICK,answerClick);
            questions.push('Howmuch is 1+1?',['2','1','3','4'],'Howmuch is 1+2',['3','2','1','4'],'Howmuch is 2+2?',['4','3','2','1'],'Howmuch is 2-1?',['1','2','3','4']);
            resultField.addEventListener(MouseEvent.CLICK,nextQuestion);
            nextQuestion();
        }
        private function answerClick(e:MouseEvent):void {

            var answer:String=e.currentTarget==answerField1 ? answerField1.text : answerField2.text;
            

            questionField.visible=answerField1.visible=answerField2.visible=answerField3.visible=answerField4.visible=false;
            resultField.visible=true;
            if (questions[questionIndex*2+1][0]==answer) {
                resultField.text='Correct.';
            } else {
                resultField.text='wrong try again.';
                questionIndex=-1;
            }
        }
        private function nextQuestion(e:MouseEvent=null):void {
            questionIndex++;
            if (questionIndex*2>=questions.length) {
                answerField2.removeEventListener(MouseEvent.CLICK,answerClick);
                answerField2.addEventListener(MouseEvent.CLICK,restart);
                questionField.text='win.';
                answerField2.text='Again?';
                resultField.visible=false;
                questionField.visible=answerField2.visible=true;
                return;
            }
            resultField.visible=false;
            questionField.visible=answerField1.visible=answerField2.visible=answerField3.visible=answerField4.visible=true;
            questionField.text=questions[questionIndex*2];
            var qo:uint=Math.floor(Math.random()*2);
            answerField1.text=questions[questionIndex*2+1][qo];
            answerField2.text=questions[questionIndex*2+1][Math.abs(qo-1)];
            answerField3.text=questions[questionIndex*2+1][Math.abs(qo-2)];
            answerField4.text=questions[questionIndex*2+1][Math.abs(qo-3)];
        }
        private function restart(e:MouseEvent=null):void {
            questionIndex=-1;
            nextQuestion();
            answerField2.removeEventListener(MouseEvent.CLICK,restart);
            answerField2.addEventListener(MouseEvent.CLICK,answerClick);
        }
    }
}

This is my code.
Can anybody help me?