Play AR Animation on TrackingFound

Now i'm version of unity from 4.3.1 to 4.3.3, but i have a problem for making animation with Augmented Reality (Vuforia).

This sript for play AR Animation when ImageTarget found (DefaultTrackableEventHandler.cs) in unity 4.3.1 :

 private void OnTrackingFound()
     {
         Animation[] animationComponents = GetComponentsInChildren<Animation>(true);

         foreach (Animation component in animationComponents)
         {
             animation.Play();
         }

But its not working for my unity version 4.3.3.

Whether the type .anim version 4.3.1 is different with. anim version 4.3.3 ?

What is new reference script for play AR Animation on Tracking Found ?