Access of undefined property keyUpHandler - actionscript-3

Question

Scene 1, Layer 'script', Frame 1, Line 39
1120: Access of undefined property keyUpHandler.
Ok, so I'm following this tutorial http://as3gametuts.com/2012/04/05/platformer-8/
^ Just to have a source and not claim the work myself
I have created
stage.addEventListener(KeyboardEvent.KEY_UP, keyUpHandler);
and later in the code i have:
function keyUpHandler(e:KeyboardEvent):void{
if(e.keyCode == Keyboard.LEFT){
leftPressed = false;
} else if(e.keyCode == Keyboard.RIGHT){
rightPressed = false;
} else if(e.keyCode == Keyboard.UP){
upPressed = false;
} else if(e.keyCode == Keyboard.DOWN){
downPressed = false;
}
}
My errormessage is at the top, any thoughts on why im getting this? Thanks for reading :P
My entire code:
var leftPressed:Boolean = false;
var rightPressed:Boolean = false;
var upPressed:Boolean = false;
var downPressed:Boolean = false;
var leftBumping:Boolean = false;
var rightBumping:Boolean = false;
var upBumping:Boolean = false;
var downBumping:Boolean = false;
var leftBumpPoint:Point = new Point(-30, -55);
var rightBumpPoint:Point = new Point(30, -55);
var upBumpPoint:Point = new Point(0, -120);
var downBumpPoint:Point = new Point(0, 0);
var scrollX:Number = 0;
var scrollY:Number = 500;
var xSpeed:Number = 0;
var ySpeed:Number = 0;
var speedConstant:Number = 4;
var frictionConstant:Number = 0.9;
var gravityConstant:Number = 1.8;
var jumpConstant:Number = -35;
var maxSpeedConstant:Number = 18;
var doubleJumpReady:Boolean = false;
var upReleasedInAir:Boolean = false;
var carrotCollected:Boolean = false;
//var carrotGathered.visible = false; //HER
var snowmanHappy:Boolean = false;
var openDoor:Boolean = false;
stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDownHandler);
stage.addEventListener(KeyboardEvent.KEY_UP, keyUpHandler);
stage.addEventListener(Event.ENTER_FRAME, loop);
function loop(e:Event):void{
if(back.collisions.hitTestPoint(player.x + leftBumpPoint.x, player.y + leftBumpPoint.y, true)){
//trace("leftBumping");
leftBumping = true;
} else {
leftBumping = false;
}
if(back.collisions.hitTestPoint(player.x + rightBumpPoint.x, player.y + rightBumpPoint.y, true)){
//trace("rightBumping");
rightBumping = true;
} else {
rightBumping = false;
}
if(back.collisions.hitTestPoint(player.x + upBumpPoint.x, player.y + upBumpPoint.y, true)){
//trace("upBumping");
upBumping = true;
} else {
upBumping = false;
}
if(back.collisions.hitTestPoint(player.x + downBumpPoint.x, player.y + downBumpPoint.y, true)){
//trace("downBumping");
downBumping = true;
} else {
downBumping = false;
}
if(leftPressed){
xSpeed -= speedConstant;
player.scaleX = -1;
} else if(rightPressed){
xSpeed += speedConstant;
player.scaleX = 1;
}
/*if(upPressed){
ySpeed -= speedConstant;
} else if(downPressed){
ySpeed += speedConstant;
}*/
if(leftBumping){
if(xSpeed < 0){
xSpeed *= -0.5;
}
}
if(rightBumping){
if(xSpeed > 0){
xSpeed *= -0.5;
}
}
if(upBumping){
if(ySpeed < 0){
ySpeed *= -0.5;
}
}
if(downBumping){
if(ySpeed > 0){
ySpeed = 0;
}
if(upPressed){
ySpeed = jumpConstant;
}
//DOBBELTHOPP..
if(upReleasedInAir == true){
upReleasedInAir = false;
}
if(doubleJumpReady == false){
doubleJumpReady = true;
}
} else {
ySpeed += gravityConstant;
//DOBBELTHOPP
if(upPressed == false && upReleasedInAir == false){
upReleasedInAir = true;
}
if(doubleJumpReady && upReleasedInAir){
if(upPressed){
doubleJumpReady = false;
ySpeed = jumpConstant; //set the y speed to the jump constant
}
}
}
if(xSpeed > maxSpeedConstant){ //moving right
xSpeed = maxSpeedConstant;
} else if(xSpeed < (maxSpeedConstant * -1)){ //moving left
xSpeed = (maxSpeedConstant * -1);
}
xSpeed *= frictionConstant;
ySpeed *= frictionConstant;
if(Math.abs(xSpeed) < 0.5){
xSpeed = 0;
}
scrollX -= xSpeed;
scrollY -= ySpeed;
back.x = scrollX;
back.y = scrollY;
sky.x = scrollX * 0.2;
sky.y = scrollY * 0.2;
if(carrotCollected == false){
if(player.hitTestObject(back.carrot)){
back.carrot.visible = false;
carrotGathered.visible = true; // HER
carrotCollected = true;
}
}
if(snowmanHappy == false){
if(carrotCollected == true){
if(player.hitTestObject(back.snowMan)){
carrotGathered.visible = false; // HER
back.snowMan.gotoAndPlay(2);
snowmanHappy = true;
}
}
}
if(openDoor == false){
if(snowmanHappy == true){
if(player.hitTestObject(back.snowMan)){
back.lockedDoor.gotoAndStop(2);
openDoor = true;
}
}
}
}
function keyDownHandler(e:KeyboardEvent):void{
if(e.keyCode == Keyboard.LEFT){
leftPressed = true;
} else if(e.keyCode == Keyboard.RIGHT){
rightPressed = true;
} else if(e.keyCode == Keyboard.UP){
upPressed = true;
} else if(e.keyCode == Keyboard.DOWN){
downPressed = true;
/*if(openDoor && player.hitTestObject(back.other.lockedDoor)){
gotoAndStop(2);
}*/
}
function keyUpHandler(e:KeyboardEvent):void{
if(e.keyCode == Keyboard.LEFT){
leftPressed = false;
} else if(e.keyCode == Keyboard.RIGHT){
rightPressed = false;
} else if(e.keyCode == Keyboard.UP){
upPressed = false;
} else if(e.keyCode == Keyboard.DOWN){
downPressed = false;
}
}
}

Answer 1

Your keyuphandler is engulfed in the KeyDownHandler. Check your { and } since you commented it out.