Code for creating a jukebox machine in actionscript 3

Hi, I am trying to create a code in actionscript 3 where I can put a coin in a jukebox and it will credit the machine.  So far I have the code to drag each coin however I cannot figure out how one I put the coin in the coinslot it will go back to its place and also credit the machine.  I want the amount of money I put in to be displayed on the screen.  For example if I put a nickel in it will display 5 on the machine.  I want the machine to allow the person to play a song once 50 cents have been put in the machine. Please help I cannot figure out how to code this.

This is what I have so far:

package 

{

  import flash.display.MovieClip;

  import flash.events.MouseEvent;

  public class DragCoin extends MovieClip

  {

  protected var oldX:uint;

  protected var oldY:uint;

  public function DragCoin()

  {

  oldX = this.x;

  oldY = this.y;

  trace("Coin Constructor");

  buttonMode = true;

  this.addEventListener(MouseEvent.MOUSE_DOWN, dragingCoin);

  }

  public function dragingCoin(me:MouseEvent):void

  {

  trace("dragging");

  stage.addChild(this);

  startDrag();

  this.addEventListener(MouseEvent.MOUSE_UP, dropCoin);

  }

  public function dropCoin(mouseEvent:MouseEvent):void

  {

  this.removeEventListener(MouseEvent.MOUSE_UP, dropCoin);

  stopDrag();

  trace("dropTarget>"+dropTarget);

  if (dropTarget != null)

  {

  if (dropTarget.parent.name == "Coinslot")

  {

  trace("found Coinslot");

  putInCoinslot();

  }

  else

  returnToOldXY();

  }

  else

  {

  trace("Dropped on nothing");

  returnToOldXY();

  }

  }

  public function returnToOldXY():void

  {

  this.x = oldX;

  this.y = oldY;

  }

  public function putInCoinslot():void

  {

  this.scaleX = this.scaleY = 0.3;

  this.alpha = 0.4;

  buttonMode = false;

  this.removeEventListener(MouseEvent.MOUSE_DOWN, dragingCoin);

  }

  }

}