Sample project error

[Anjan Biswas]

The sample project is giving this error when I tap the volume + button.

Thread 1: Fatal error: 'try!' expression unexpectedly raised an error: SubtleVolume.SubtleVolumeError.unableToChangeVolumeLevel

And this is where it fails-

@IBAction func plusAction() {
    try! volume.setVolumeLevel(volume.volumeLevel + 0.05, animated: true)
  }

[Andrea Mazzini]

Are you running on the simulator? It doesn't work there, you need a device.

[Anjan Biswas]

@andreamazz didn't realize that was the requirement. I'll give it a try. thanks.