function not running when called code mostly copyed from video - android-studio

Question

I'm trying to request Bluetooth permissions, however it is skipping the function that asks for the permission, and just shows the text saying Bluetooth Permission Denied.
the code:
class MainActivity : AppCompatActivity() {
lateinit var perms_button: Button
private val BLUETOOTH_PERM_CODE = 123
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
perms_button = findViewById(R.id.perms_button)
perms_button.setOnClickListener {
checkPermission(Manifest.permission.BLUETOOTH, BLUETOOTH_PERM_CODE)//this is supposed to run the function that requests permissions
}
}
private fun checkPermission(permission: String, requestCode: Int) {// this is the function that doesn't run
if (ContextCompat.checkSelfPermission(this#MainActivity, permission) == PackageManager.PERMISSION_DENIED) {
ActivityCompat.requestPermissions(this#MainActivity, arrayOf(permission), requestCode)
} else {
Toast.makeText(this#MainActivity, "Permission Granted already", Toast.LENGTH_LONG).show()
}
}
override fun onRequestPermissionsResult(
requestCode: Int,
permissions: Array<out String>,
grantResults: IntArray
) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults)
if (requestCode == BLUETOOTH_PERM_CODE) {
if (grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
perms_button.setText("Permission Granted")
Toast.makeText(this#MainActivity, "Bluetooth Permission Granted", Toast.LENGTH_SHORT).show()
}else {
Toast.makeText(this#MainActivity, "Bluetooth Permission Denied", Toast.LENGTH_SHORT).show()
}
}
}
}
link to the video I got the code from: https://youtu.be/_2fo2Z6O5D4
I'm unsure if the problem has to do with the changes I had to make for my app(It always the changes you made)
thanks in advance for any help.