actionscript 3 - Movement not working AS3 -

i'm working on game, , new as3.

i'm stuck on character movement: following guide , ended following code. when test game plays character animation , 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;             }         }     } }