private Animator anim;
public float speed = 1.5f;
private Vector3 target;

void Start () {
anim = GetComponent<Animator>();
 target = transform.position;
}

void Update () {
 if (Input.GetMouseButtonDown(0)) {
     target = Camera.main.ScreenToWorldPoint(Input.mousePosition);

     target.z = transform.position.z;
                 //its working fine
     anim.SetInteger ("Direction", 1);
 }
 transform.position = Vector3.MoveTowards(transform.position, target,speed * Time.deltaTime);
}
}