Line Drawing Script on Stage doesn't work in MovieClip?

Question

I have a little snippet of code that allows the user to create a line with the mouse, and clears the line if they end up touching the hitbox with the mouse, while they're drawing the line. It works fine when it's just thrown onto the main timeline. However, when I try to encapsulate it within a movie clip, it suddenly doesn't work. At all. Are there any suggestions as to why this is happening? Here's the code.
function(){return A.apply(null,[this].concat($A(arguments)))}
var drawing:Boolean;
var my_line:MovieClip = new MovieClip();
this.addChild(my_line);
drawing = false;//to start with
stage.addEventListener(MouseEvent.MOUSE_DOWN, startDrawing);
stage.addEventListener(MouseEvent.MOUSE_MOVE, draw);
stage.addEventListener(MouseEvent.MOUSE_UP, stopDrawing);
function startDrawing(event:MouseEvent):void
//move to the correct starting position for drawing
my_line.graphics.lineStyle(3,0xFF0000);
my_line.graphics.moveTo( mouseX, mouseY);
if (drawBox.hitTestPoint(mouseX,mouseY,true))
  drawing = true;
function draw(event:MouseEvent)
if (drawing)
  my_line.graphics.lineTo(mouseX,mouseY);
  if (oneHitBox.hitTestPoint(mouseX,mouseY,true))
   my_line.graphics.clear();//remove line
function stopDrawing(event:MouseEvent)
drawing = false;
Thanks for any help you can offer!

Answer 1

Oh! Haha, sorry, brainfart. That is all of the code that I use in that particular frame, where I want the user to be able to draw within the confines of the box. The only other code I use are for the drag and drop boxes, meant to be dropped onto a particular area. Those are working just fine, but if you want to see that code too, then:
function(){return A.apply(null,[this].concat($A(arguments)))}
/* Stop at This Frame
The Flash timeline will stop/pause at the frame where you insert this code.
Can also be used to stop/pause the timeline of movieclips.
stop();
/* Drag and Drop
Makes the specified symbol instance moveable with drag and drop.
lunchOff.addEventListener(MouseEvent.MOUSE_DOWN, fl_ClickToDrag);
function fl_ClickToDrag(event:MouseEvent):void
lunchOff.startDrag();
stage.addEventListener(MouseEvent.MOUSE_UP, fl_ReleaseToDrop);
function fl_ReleaseToDrop(event:MouseEvent):void
lunchOff.stopDrag();
if (lunchOff.hitTestObject(dropBoxTwo))
  if (offDuty.hitTestObject(dropBoxThree) && onDuty.hitTestObject(dropBoxOne) && lunchOff.hitTestObject(dropBoxTwo))
   gotoAndStop(16);
   stage.focus = aBox;
else
  lunchOff.x = -548.95;
  lunchOff.y = -306.15;
/* Drag and Drop
Makes the specified symbol instance moveable with drag and drop.
offDuty.addEventListener(MouseEvent.MOUSE_DOWN, fl_ClickToDrag_2);
function fl_ClickToDrag_2(event:MouseEvent):void
offDuty.startDrag();
stage.addEventListener(MouseEvent.MOUSE_UP, fl_ReleaseToDrop_2);
function fl_ReleaseToDrop_2(event:MouseEvent):void
offDuty.stopDrag();
if (offDuty.hitTestObject(dropBoxThree))
  if (offDuty.hitTestObject(dropBoxThree) && onDuty.hitTestObject(dropBoxOne) && lunchOff.hitTestObject(dropBoxTwo))
   gotoAndStop(16);
   stage.focus = aBox;;
else
  offDuty.x = -557.0;
  offDuty.y = -155.95;
/* Drag and Drop
Makes the specified symbol instance moveable with drag and drop.
onDuty.addEventListener(MouseEvent.MOUSE_DOWN, fl_ClickToDrag_3);
function fl_ClickToDrag_3(event:MouseEvent):void
onDuty.startDrag();
stage.addEventListener(MouseEvent.MOUSE_UP, fl_ReleaseToDrop_3);
function fl_ReleaseToDrop_3(event:MouseEvent):void
onDuty.stopDrag();
if (onDuty.hitTestObject(dropBoxOne))
  if (offDuty.hitTestObject(dropBoxThree) && lunchOff.hitTestObject(dropBoxTwo))
   gotoAndStop(16);
   stage.focus = aBox;
else
  onDuty.x = -539.00;
  onDuty.y = 39.45;