Attack Animation through Javascript

Hi, I need to make sure the attack can only play, while in the attackidle stance on mecanim. any ideas? heres script. #pragma strict internal var animator : Animator; var hor : float; var ver : float; private var draw: boolean = false; private var attack: boolean = false;

 function Start () {
     animator = GetComponent(Animator);
 }
 function Update (){
     hor = Input.GetAxis("Horizontal");
     ver = Input.GetAxis("Vertical");
 }
 
 function FixedUpdate(){
     animator.SetFloat("walking", ver);
 
 if(Input.GetKeyDown(KeyCode.LeftShift)) {
         animator.SetBool("draw", true);
     }
 if(Input.GetKeyUp(KeyCode.LeftShift)){
         animator.SetBool("draw", false);
 if(Input.GetKeyDown("t") && Input.GetKey("t")){
     animator.SetBool("attack", true);
     }
     if(Input.GetKeyUp("t")){
     animator.SetBool("attack", false);
     
 }
     }
     }

using Booleans, I apologize in advance for poor english.