Animation wont play (click to move)

 using UnityEngine;
 using System.Collections;
 
 public class ClickToMove : MonoBehaviour {
     private Transform myTransform;                // this transform
     private Vector3 destinationPosition;        // The destination Point
     private float destinationDistance;            // The distance between myTransform and destinationPosition
 
     public float moveSpeed;                        // The Speed the character will move
 
     public AnimationClip idle;
     public AnimationClip run;
     public AnimationClip punch;
 
 
 
     void Start () {
         myTransform = transform;                            // sets myTransform to this GameObject.transform
         destinationPosition = myTransform.position;            // prevents myTransform reset
 
     }
 
     void Update () {
 
 
             if (Input.GetKeyDown (KeyCode.X)) {
                 GetComponent<Animation> ().Play (punch.name);
 
             }
         
 
 
         // keep track of the distance between this gameObject and destinationPosition
         destinationDistance = Vector3.Distance(destinationPosition, myTransform.position);
 
         if (destinationDistance < .5f) {        // To prevent shakin behavior when near destination
             moveSpeed = 0;
             GetComponent<Animation> ().Play (idle.name);
         } else if (destinationDistance > .5f) {            // To Reset Speed to default
             moveSpeed = 30;
             GetComponent<Animation> ().Play (run.name);
         } 
 
 
 
 
         // Moves the Player if the Left Mouse Button was clicked
         if (Input.GetMouseButtonDown(0)&& GUIUtility.hotControl ==0) {
 
             Plane playerPlane = new Plane(Vector3.up, myTransform.position);
             Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
             float hitdist = 0.0f;
 
             if (playerPlane.Raycast(ray, out hitdist)) {
                 Vector3 targetPoint = ray.GetPoint(hitdist);
                 destinationPosition = ray.GetPoint(hitdist);
                 Quaternion targetRotation = Quaternion.LookRotation(targetPoint - transform.position);
                 myTransform.rotation = targetRotation;
             }
 
 
         }
 
 
         // Moves the player if the mouse button is hold down
         else if (Input.GetMouseButton(0)&& GUIUtility.hotControl ==0) {
 
             Plane playerPlane = new Plane(Vector3.up, myTransform.position);
             Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
             float hitdist = 0.0f;
 
             if (playerPlane.Raycast(ray, out hitdist)) {
                 Vector3 targetPoint = ray.GetPoint(hitdist);
                 destinationPosition = ray.GetPoint(hitdist);
                 Quaternion targetRotation = Quaternion.LookRotation(targetPoint - transform.position);
                 myTransform.rotation = targetRotation;
             }
             //    myTransform.position = Vector3.MoveTowards(myTransform.position, destinationPosition, moveSpeed * Time.deltaTime);
         }
 
         // To prevent code from running if not needed
         if (destinationDistance > .5f) {
             myTransform.position = Vector3.MoveTowards (myTransform.position, destinationPosition, moveSpeed * Time.deltaTime);
 
 
         } 
 
     }
 
 
 
 
 }

hi, idle and run animations Works fine.. but i want play punch animation when i press X... and not wokring.. i dont understans...

sory for my engrish.. help me pls