How to disable button in swift 5

This is my button i use Swift 5

@IBAction func register(_ sender: Any) {
Print("register"}
}

@IBAction func mybutton1(_ sender: Any) {
Print("my button 1"}
}

@IBAction func mybutton2(_ sender: Any) {
Print("my button 2"}
}

i want to disable mybutton1 & mybutton2 only enable button register, i try but it not work Hope you guys can help me write more code...

override func viewDidLoad() {
                super.viewDidLoad()
let result = "try disable a button"
  if result.count == 10 {
    // everything normal
    } else {
    @IBAction func mybutton1(_ sender: Any) {
     mybutton1(_ sender: Any).isEnabled = false;
     }
    @IBAction func mybutton2(_ sender: Any) {
     mybutton2(_ sender: Any).isEnabled = false;
     }
   }
}