How to make gesture on UILabel?

Question

iOS

Can you suggest, plz
Need to add "Tap" gesture to UIlabel.
If the gesture is added to fieldView, everything works, but it doesn't work on elem1.
What could be the problem?
fieldView - there I draw a field using func draw(_ rect: CGRect) {...}

import UIKit

class ViewController: UIViewController {
    
    var ticTac = TicTacToeModel()
    
    @IBOutlet weak var fieldView: FieldView!

    @IBOutlet weak var elem1: UILabel!  {
        didSet {
            let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.taplabel))
            elem1.addGestureRecognizer(tapGesture)
        }
    }

    override func viewDidLoad() {
        super.viewDidLoad()
    }
    
    func taplabel() {
        elem1.text = ticTac.stepPlayer()
    }   

}

Answer 1

Ask

elem1.isUserInteractionEnabled = true