Access of undefined property (dynamic text box)

Question

Hi guys,
I have a movie clip working as a button that is disabled after click. I need to add a scoring option, so that on click it also adds to the score. When I add the scoreGame function, it says the text box is undefined. Ideas?
Here's the code:
package
          import flash.display.MovieClip;
          import flash.events.MouseEvent;
          public class DisablingButtons extends MovieClip
                    var labels:Array;
                    var thisParent:*;
                    var score:Number = 0;
                    var goalScore:Number = 8;
                    public function DisablingButtons()
                              trace("it's working!");
                              labels = this.currentLabels;
                              this.addEventListener(MouseEvent.CLICK, scoreGame);
                              this.addEventListener(MouseEvent.CLICK, disableButton);
                              this.addEventListener(MouseEvent.ROLL_OVER, over);
                              this.addEventListener(MouseEvent.ROLL_OUT, out);
                    function scoreGame(myEvent:MouseEvent):void
                              score++;
                              score1.text = String(score);
                              if (score == goalScore)
                                        gotoAndStop(201);
                    function disableButton(event:MouseEvent):void
                              for (var i:int = 0; i < labels.length; i++)
                                        if (labels[i].name == "disable")
                                                  this.gotoAndPlay("disable");
                              this.removeEventListener(MouseEvent.CLICK, disableButton);
                              this.removeEventListener(MouseEvent.ROLL_OVER, over);
                              this.removeEventListener(MouseEvent.ROLL_OUT, out);
                    function over(event:MouseEvent):void
                              for (var j:int = 0; j < labels.length; j++)
                                        if (labels[j].name == "over")
                                                  this.gotoAndPlay("over");
                    function out(event:MouseEvent):void
                              for (var k:int = 0; k < labels.length; k++)
                                        if (labels[k].name == "out")
                                                  this.gotoAndPlay("out");

Answer 1

When you instantiate the class in your fla, you would pass the textfield to the class...
import DisablingButtons;
var btn:DisablingButtons = new DisablingButtons(score1);
addChild(btn);
And in your class file you would need to adjust it to accept the textfield such as what I show below.  Just realize that I have manipulated the naming to preserve your score1 name at both ends of your code by naming the argument that the class sees differently (txt).  Otherwise I would have normally used a differewnt variable name within the class than score1
package
          import flash.text.TextField;
          import flash.display.MovieClip;
          import flash.events.MouseEvent;
          public class DisablingButtons extends MovieClip
                    var labels:Array;
                    var thisParent:*;
                    var score:Number = 0;
                    var goalScore:Number = 8;
                   var score1:TextField;
                     public function DisablingButtons(txt:TextField)
                              trace("it's working!");
                              score1 = txt;
                              labels = this.currentLabels;
                              this.addEventListener(MouseEvent.CLICK, scoreGame);
                              this.addEventListener(MouseEvent.CLICK, disableButton);
                              this.addEventListener(MouseEvent.ROLL_OVER, over);
                              this.addEventListener(MouseEvent.ROLL_OUT, out);
etc...