Sprite Updates

//Update Section
for (i = 0; i < count; i++)
{
    sprite = new SpriteClass();
    sprite.destX = 350 + 20*(i%4);
    sprite.destY = 350; // + 10*(int(Math.random()*4));
    sprite.x = int(Math.random() * 700);
    sprite.y = 290 + int(Math.random() * 200);
    //addChild(sprite);
    addChild(sprite.bitmapCanvas);
    sprites.push(sprite);
}

public function SpriteClass()
{
    speed = 5.5;
    remainingMoveRate = speed;
    bitmapDataCanvas = new BitmapData(20, 20, true, 0x000000);
    bitmapCanvas = new Bitmap(bitmapDataCanvas);
    rectUnit = new Rectangle(0, 0, 20, 20);
    //addChild(bitmapCanvas);
}

public function Update():void
{
    MoveUnit();
    //Got added to compensate for not being in the sprite class
    bitmapCanvas.x = x;
    bitmapCanvas.y = y;

    bitmapDataCanvas.lock();
    //rectUnit.x = 0;
    //rectUnit.y = 0;
    bitmapDataCanvas.fillRect(Main.rectBackground, 0x00000000);
    bitmapDataCanvas.copyPixels(Main.spriteData, rectUnit, Main.pointUnit);
    bitmapDataCanvas.unlock();
}