I want to add multiple shadows to a label. Red shadow and blue shadow. But my code doesn’t work. I see only blue shadow.

private lazy var titleLabel: UILabel = {
    let label = UILabel()
    label.textColor = .black
    label.translatesAutoresizingMaskIntoConstraints = false
    return label
}()

override func viewDidLoad() {
    super.viewDidLoad()
    titleLabel.text = "1"
    addDropShadow(color: UIColor.red, offset: CGSize(width: -6, height: -6), btnLayer: titleLabel.layer)
    addDropShadow(color: UIColor.blue, offset: CGSize(width: 6, height: 6), btnLayer: titleLabel.layer)
}

private func addDropShadow(color: UIColor, offset: CGSize, btnLayer : CALayer) {
    btnLayer.masksToBounds = false
    btnLayer.shadowColor = color.cgColor
    btnLayer.shadowOpacity = 1
    btnLayer.shadowOffset = offset
    btnLayer.shadowRadius = 10
}