Unity Trigger Animation Script

UnityTriggerAnim.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Playables;
namespace Vuforia{

public class ImageTargetAnimTrigger: MonoBehaviour,
ITrackableEventHandler
{
	private TrackableBehaviour mTrackableBehaviour;
	private GameObject myAudio;
	private GameObject animationTimeline;


		private bool audioStartedPlayingAlready = false;

	void Start()
	{
		
		myAudio = GameObject.Find("AudioBG");
		animationTimeline = GameObject.Find("Timeline");

		mTrackableBehaviour = GetComponent<TrackableBehaviour>();
		if (mTrackableBehaviour)
		{
			mTrackableBehaviour.RegisterTrackableEventHandler(this);
		}
	}

	public void OnTrackableStateChanged(
		TrackableBehaviour.Status previousStatus,
		TrackableBehaviour.Status newStatus)
	{
			print ("CHANGED STATE");
		
		if (newStatus == TrackableBehaviour.Status.DETECTED ||
			newStatus == TrackableBehaviour.Status.TRACKED ||
			newStatus == TrackableBehaviour.Status.EXTENDED_TRACKED)
		{
			// Play audio when target is found
			if(audioStartedPlayingAlready == false){
				myAudio.GetComponent<AudioSource>().Play();		
				audioStartedPlayingAlready = true;
			}
			animationTimeline.GetComponent<PlayableDirector>().Play();
		}
		else
		{
			// Stop audio when target is lost
			//	myAudio.GetComponent<AudioSource>().Pause();
				animationTimeline.GetComponent<PlayableDirector>().Pause();
		}
	}   
	}
}