swiftでテキストを変更する

class ViewController: UIViewController {
    
    
    @IBOutlet weak var myLabel: UILabel!
    @IBAction func changeLabel(sender: AnyObject) {
        myLabel.text = "you changed me"
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}

ああああ、mac買い換えて〜
誰か譲ってくれないかな