Cloaking script for Multiplayer C#

Hi, I have a question about my script,

I was wondering if I needed to use an [RPC] to show the other players and the server that my player is cloaking, but every time I cloak it uses the energy and other players can't see me cloak, I know that the "Graphics" disappear because the shadow disappears on the client's computer but for other players nothing happens.

Here is the script :

 using UnityEngine;
 using System.Collections;
 /// <summary>
 /// This script is attached to the player.
 /// 
 /// This script accesses the BlinkEnergy script.
 /// </summary>
 public class Cloaking : MonoBehaviour {
 
     // <Variables>
 
     // Particle effect.
     public GameObject cloakEffect;
 
 
     // Time cloak lasts for
     private float activeTime = 6;
 
 
     // Quick reference
     private Transform playerGraphics;
 
     private Transform myTransform;
 
 
     // Used to affect the energy.
     private BlinkEnergy energyScript;
 
     private float cloakCost = 80;
 
 
     // Determine where the cloakEffect should be instantiated.
     private Vector3 startPosition = new Vector3();
 
     // <Variables END>
 
     // Use this for initialization
     void Start () {
         if (GetComponent<NetworkView> ().isMine == true) {
             myTransform = transform;
 
 
             playerGraphics = myTransform.FindChild ("Graphics");
 
 
             // Access the BlinkEnergy script.
             energyScript = myTransform.GetComponent<BlinkEnergy> ();
         }
 
         else 
         {
             enabled = false;
         }
     }
     
     // Update is called once per frame
     void Update () {
         if (Input.GetButtonDown ("Cloak") && Cursor.visible == false && energyScript.blink >= cloakCost)
         {
             energyScript.blink = energyScript.blink - cloakCost;
 
             startPosition = myTransform.position;
 
             DisableAndStartTimer();
         }
     }
 
 
 
     void DisableAndStartTimer()
     {
         //Disable the player's graphics so that they dissappear for a moment.
         
         playerGraphics.GetComponent<Renderer>().enabled = false;
         
         
         //Run a Coroutine that will limit the time that the player can go invisible for.
         
         StartCoroutine(RunForAMoment());
         
     }
 
 
     IEnumerator RunForAMoment ()
     {
         yield return new WaitForSeconds(activeTime);
 
         //Enable the graphics so that the player can be seen again.
         
         playerGraphics.GetComponent<Renderer>().enabled = true;
         
         
         //Send out an RPC across the network so that everyone sees the cloak effect.
         
         GetComponent<NetworkView>().RPC("CloakEffect", RPCMode.OthersBuffered, startPosition);
     }
 
 
     [RPC]
     void CloakEffect (Vector3 startPos)
     {
         Instantiate(cloakEffect, startPos, Quaternion.identity);
     }
 }