Android Studio AlertDialog Pass Values to DialogFragment - Kotlin 1

MainActivity.kt

class MainActivity : AppCompatActivity(){
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        findViewById<Button>(R.id.btn).setOnClickListener {
            val dialogFragment = MyDialogFragment()

            // 値を渡す
            val bundle = Bundle().apply {
                putString("TITLE", "こんにちは")
                putInt("NUMBER", 123)
            }
            dialogFragment.arguments = bundle

            dialogFragment.show(supportFragmentManager, "my_dialog")
        }
    }
}