I need help with this sound play on click.?

Im trying to make this sound from the soundscape play when the player clicks this parent, but the error says "Cant set value"

function OnClick()
	game.Soundscape.Victory.IsPlaying= true
	script.Parent.Parent.Visible = false
	script.Parent.Parent.Parent.TutFrame.Visible = true
	
	
end




script.Parent.MouseButton1Down:connect(OnClick)