How to Deactivate Gameobjects Array in Unity 4?

this is my code(C#):

using UnityEngine; using System.Collections; public class TestCodeCS : MonoBehaviour { public int numSelectors = 5; GameObject[] selectorArr;

 void Start()
 {
     selectorArr = new GameObject[numSelectors];
     for (int i = 0; i < numSelectors; i++)
     {
         GameObject go = Instantiate((Resources.Load("_prefabs/prefab_Cube")), new Vector3((float)i, 1, 0), Quaternion.identity) as GameObject;
         go.transform.localScale = Vector3.one;
         selectorArr[i] = go;
     }
     Deactivate();
     
 }
 void Deactivate(){
     foreach (GameObject obj in selectorArr)

{ obj.activeSelf = false;

} } }

after run,i get message(warning): UnityEngine.GameObject.active' is obsolete: GameObject.active is obsolete. Use GameObject.SetActive(), GameObject.activeSelf or GameObject.activeInHierarchy.'
How to fix?