Movement not working AS3 - actionscript-3

Question

I'm currently working on a game, and am fairly new to AS3.
I'm stuck on the character movement: I was following a guide and ended up with the following as my code. When I test the game it just plays the character animation and I can't control it.
package {
import flash.display.Stage;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
import flash.utils.Proxy;
import flash.utils.flash_proxy;
dynamic public class KeyObject extends Proxy {
private static var stage:Stage;
private static var keysDown:Object;
public function KeyObject(stage:Stage) {
construct(stage);
}
public function construct(stage:Stage):void {
KeyObject.stage = stage;
keysDown = new Object();
stage.addEventListener(KeyboardEvent.KEY_DOWN, keyPressed);
stage.addEventListener(KeyboardEvent.KEY_UP, keyReleased);
}
flash_proxy override function getProperty(name:*):* {
return (name in Keyboard) ? Keyboard[name] : -1;
}
public function isDown(keyCode:uint):Boolean {
return Boolean(keyCode in keysDown);
}
public function deconstruct():void {
stage.removeEventListener(KeyboardEvent.KEY_DOWN,keyPressed);
stage.removeEventListener(KeyboardEvent.KEY_UP, keyReleased);
keysDown = new Object();
KeyObject.stage = null;
}
private function keyPressed(evt:KeyboardEvent):void {
keysDown[evt.keyCode] = true;
}
private function keyReleased(evt:KeyboardEvent):void {
delete keysDown[evt.keyCode];
}
}
}
package {
import flash.display.Sprite
import flash.events.Event;
import KeyObject;
public class Main extends Sprite{
private var key:KeyObject;
public function Main() {
addEventListener(Event.ADDED_TO_STAGE,setupKeyObject);
}
function setupKeyObject(e:Event){
key = new KeyObject(stage);
stage.addEventListener(Event.ENTER_FRAME,movePlayer);
}
function movePlayer(e:Event){
if(key.isDown(key.LEFT)){
roy.x -= 5;
}
if(key.isDown(key.RIGHT)){
roy.x +=5;
}
if(roy.x<0){
roy.x = 0;
}
if(roy.x > (stage.stageWidth - player.width)){
roy.x = stage.stageWidth - player.width;
}
}
}
}