private void Start() { changeImage = GetComponent <ChangeImage> (); animation = GetComponent <PlayAnimation> (); sound = GetComponent <TransitionSound> (); leftButton.onClick.AddListener(delegate() { changeImage.PreviousImage(); animation.AniStart(); sound.Play(); }); rightButton.onClick.AddListener(delegate() { changeImage.NextImage(); animation.AniStart(); sound.Play(); }); }