HELP! Why does my Drag and Drop not work Completely?

Question

Hello! I'm working on an ActionScript 3 movie clip in Adobe Flash. In the interactive movie I want the user to create a snowman with the parts on the left side. (Picture below.)
On the right side I have the snowman slightly visible, so the user knows where to put the parts. Most of it seems to work... but after I put on the body, hat, and arms the other pieces don't work; like the eyes, nose, mouth, etc. Why does it not work? Can someone help me?
This is how it should look at the end, when the user complets it.
I think I coded this correctly. But I'm not sure. Please take a look at my code and see what the problem is. Thanks!!!
var startX:Number;
var startY:Number;
var counter:Number = 0;
SNOWMAN1_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
SNOWMAN1_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
SNOWMAN2_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
SNOWMAN2_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
SNOWMAN3_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
SNOWMAN3_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
LEFTARM_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
LEFTARM_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
HAT_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
HAT_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
RIGHTARM_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
RIGHTARM_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
SCARF_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
SCARF_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
EYES_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
EYES_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
MOUTH_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
MOUTH_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
CARROT_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
CARROT_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
COLE1_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
COLE1_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
COLE2_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
COLE2_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
COLE3_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
COLE3_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
function pickUp(event:MouseEvent):void {
event.target.startDrag(true);
MYTEXTBOX.text = "";
event.target.parent.addChild(event.target);
startX = event.target.x;
startY = event.target.y;
function dropIt(event:MouseEvent):void {
event.target.stopDrag();
var myTargetName:String = "T" + event.target.name;
var myTarget:DisplayObject = getChildByName(myTargetName);
if (event.target.dropTarget != null && event.target.dropTarget.parent == myTarget){
MYTEXTBOX.text = "Good Job!";
event.target.removeEventListener(MouseEvent.MOUSE_DOWN, pickUp);
event.target.removeEventListener(MouseEvent.MOUSE_UP, dropIt);
event.target.buttonMode = false;
event.target.x = myTarget.x;
event.target.y = myTarget.y;
counter++;
} else {
MYTEXTBOX.text = "Try Again!";
event.target.x = startX;
event.target.y = startY;
if(counter == 13){
        MYTEXTBOX.text = "Congrats, you're finished!";
SNOWMAN1_mc.buttonMode = true;
SNOWMAN2_mc.buttonMode = true;
SNOWMAN3_mc.buttonMode = true;
LEFTARM_mc.buttonMode = true;
HAT_mc.buttonMode = true;
RIGHTARM_mc.buttonMode = true;
SCARF_mc.buttonMode = true;
EYES_mc.buttonMode = true;
MOUTH_mc.buttonMode = true;
CARROT_mc.buttonMode = true;
COLE1_mc.buttonMode = true;
COLE2_mc.buttonMode = true;
COLE3_mc.buttonMode = true;

Answer 1

Below is a more efficient code. I am not sure about chasing parents you do in the code (always bad idea) so this code may be buggy:
var startX:Number;
var startY:Number;
var counter:Number = 0;
// reference to currently dragged object
var currentTarget:Sprite;
var objectCollection:Array = [SNOWMAN1_mc, SNOWMAN2_mc, SNOWMAN3_mc, LEFTARM_mc, HAT_mc, RIGHTARM_mc, SCARF_mc, EYES_mc, MOUTH_mc, CARROT_mc, COLE1_mc, COLE2_mc, COLE3_mc];
activateObjects();
function activateObjects():void {
     for (var i:int = 0; i < objectCollection.length; i++) {
          currentObject = objectCollection[i] as Sprite;
          currentObject.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
          currentObject.buttonMode = true;
function pickUp(event:MouseEvent):void {
     currentTarget = event.currentTarget as Sprite;
     currentTarget.startDrag(true);
     MYTEXTBOX.text = "";
     currentTarget.parent.addChild(currentTarget);
     startX = currentTarget.x;
     startY = currentTarget.y;
     stage.addEventListener(MouseEvent.MOUSE_UP, dropIt);
function dropIt(event:MouseEvent):void {
     stage.removeEventListener(MouseEvent.MOUSE_UP, dropIt);
     stopDrag();
     var myTarget:DisplayObject = getChildByName("T" + currentTarget.name);
     if (currentTarget.dropTarget != null && currentTarget.dropTarget.parent == myTarget){
          MYTEXTBOX.text = "Good Job!";
          currentTarget.removeEventListener(MouseEvent.MOUSE_DOWN, pickUp);
          currentTarget.buttonMode = false;
          currentTarget.x = myTarget.x;
          currentTarget.y = myTarget.y;
          counter++;
     } else {
          MYTEXTBOX.text = "Try Again!";
          currentTarget.x = startX;
          currentTarget.y = startY;
     if (counter == 13) MYTEXTBOX.text = "Congrats, you're finished!";
     currentTarget = null;