Flash: AS3 Health Bar Code

import flash.events.Event;

stage.addEventListener(Event.ENTER_FRAME, gameLoop);
stage.addChild(player);

var health = 100;

player.x = stage.mouseX;
player.y = stage.mouseY;

function gameLoop(evt:Event)
{
if(player.hitTestObject(enemy) == true) {
       health = health - 1;
}

healthBar.scaleX = health / 100;

player.x  = stage.mouseX;
player.y  = stage.mouseY;

if(enemy.x < player.x)
{
     enemy.x +=1;
}
if(enemy.x > player.x)
{
     enemy.x -=1;
}
if(enemy.y < player.y)
{
     enemy.y +=1;
}
if(enemy.y > player.y)
{
     enemy.y -=1;
}
}