Animation on android doesn't work

Hi , ihave this code attached to my character all the animation work perfectly except for the attack with tail i really can't figure it out

 //var animation: Animation;
 var maxForwardSpeed : float = 6;
 private var jumping : boolean = false;
 var character : CharacterController;
 var thisTransform : Transform;
 
 
 function Start() {
 character = GetComponent( CharacterController );
 thisTransform = transform;
 
 }
 
 function Update () {
 
 var characterVelocity = character.velocity;
 var horizontalVelocity : Vector3 = characterVelocity;
 horizontalVelocity.y = 0;
 var speed = horizontalVelocity.magnitude;
 //produit scalaire thisTransform.up et characterVelocity
 var upwardsMotion = Vector3.Dot( thisTransform.up, characterVelocity );
 //check to see if the character is jumping
 
     if(!character.isGrounded )
     {
      jumping=true;
    }
    else
    {
       jumping=false;
     }
   
    if ( jumping ) 
      {
         animation[ "jumpfinal"].speed=0.25;
        animation.Play("jumpfinal");
        
     }
     
 else if ( speed > 0 ) 
     {
 
        var forwardMotion = Vector3.Dot( thisTransform.forward, horizontalVelocity );
        //variable that will be used while lerping
       var t = 0.0;
       t = Mathf.Clamp( Mathf.Abs( speed / maxForwardSpeed ), 0, maxForwardSpeed );
       animation[ "hop" ].speed = Mathf.Lerp( 0.25, 1, t );
       //if the character is idle
       if (animation.IsPlaying( "idle" ) )
       //paly walk without blending
           {
               animation.Play( "hop" );
            }
 
 
     } 
 //if none of the condition is met 
 else 
 {
     //play idle
     idlewait () ;
 }
 
 // if the player is punching
 if(JoyButtons.IsPunshing)
 {animation[ "punch" ].speed =2.5;
 animation.Play("punch");
 animation.PlayQueued("idle");
 JoyButtons.IsPunshing=false;
 
 }
 //if the player is throwing
 if(JoyButtons.IsThrowing)
 {animation[ "Throw" ].speed =2.5;
 animation.Play("Throw");
 animation.PlayQueued("idle");
 JoyButtons.IsThrowing=false;}
 }
 //if the player is attacking with tail
 if(JoyButtons.IsTail)
 {
 animation.Play("Tail");
 animation.PlayQueued("idle");
 print("play animation tail ");
 
 JoyButtons.IsTail=false;
 }
 
 function idlewait () 
 {
 yield WaitForSeconds (5) ;
 animation.CrossFade( "idle" );
 
 
 }

Ps :IsTail is a boolean variable that's true when the player touch a gui texture the button work just fine .The message "play animation tail" always appear on the console after i stop the game . Thanks