prevent animation loop.

So I have problem with script, I just need to play zoom in animation when right mouse button is pressed, but it starts looping, here is my code:

 using UnityEngine;
 using System.Collections;
 
 public class testAnimScript : MonoBehaviour {
 
     //Holder
     public Transform WalkAnimationHolder;
 
     public bool running = false;
     public float interval = 4.5f;
     public bool zoomed = false;
     public WalkingState walkingState = WalkingState.Idle;
 
     public void FixedUpdate()
     {
         AnimationController();
         SpeedController();
     }
 
     public void SpeedController()
     {
         //When we press right mouse button....
         if (Input.GetMouseButtonDown(1) && !running && !zoomed)
         {
             zoomed = true;
             walkingState = WalkingState.Zoom;
         }
         if (Input.GetMouseButtonUp(1))
         {
             zoomed = false;
         }
 
         //other...
         if ((Input.GetAxis("Horizontal") != 0 || Input.GetAxis("Vertical") != 0) && !running && !zoomed)
         {
             if (Input.GetButton("Run"))
             {
                 walkingState = WalkingState.Running;
             }
             else
             {
                 walkingState = WalkingState.Walking;
             }
         }
         else
         {
             if (!running && !zoomed)
             {
                 walkingState = WalkingState.Idle;
             }
         }
     }
 
     public void AnimationController()
     {
 
         if(walkingState == WalkingState.Zoom)
         {
             // As I think here is my problem, basically to prevent animation loop, i do something like that: if it's time is more than 0.15 secs then, make it 0.15 so it will play once.
             if (WalkAnimationHolder.GetComponent<Animation>()["ak47zoom"].time >= 0.15f)
             {
                 WalkAnimationHolder.GetComponent<Animation>()["ak47zoom"].time = 0.15f;
              
                 Debug.Log(WalkAnimationHolder.GetComponent<Animation>()["ak47zoom"].time);
             }
             WalkAnimationHolder.GetComponent<Animation>().CrossFade("ak47zoom", 0.2f);
 
         }
         if (!zoomed)
         {
             if (walkingState == WalkingState.Running)
             {
                 WalkAnimationHolder.GetComponent<Animation>()["ak47run"].speed = 0.5f;
                 WalkAnimationHolder.GetComponent<Animation>().CrossFade("ak47run", 0.2f);
             }
             else if (walkingState == WalkingState.Walking)
             {
                 WalkAnimationHolder.GetComponent<Animation>()["ak47walk"].speed = 0.5f;
                 WalkAnimationHolder.GetComponent<Animation>().CrossFade("ak47walk", 0.2f);
             }
             else
             {
                 WalkAnimationHolder.GetComponent<Animation>().CrossFade("ak47breath", 0.2f);
             }
             if (walkingState == WalkingState.Reload)
             {
                 WalkAnimationHolder.GetComponent<Animation>().CrossFade("ak47reload", 0.2f);
             }
         }
         
     }
     public enum WalkingState
     {
         Idle,
         Walking,
         Running,
         Zoom,
         Shoot,
         Reload
     }
     void reload()
     {
         if (!running)
         {
             StartCoroutine(reloadGun());
         }
     }
     private IEnumerator reloadGun()
     {
         running = true;
         walkingState = WalkingState.Reload;
         yield return new WaitForSeconds(interval);
      
         running = false;
     }
 }
 

here is link to my video btw: youtube video

any help, comment, etc will be helpful! if code isn't readable just comment, I will try to make it smaller. :)

thanks.

-Nick