Object Pooling Help

I have been following GamesPlusJames endless runner tutorial link textand I have ran into a problem After creating the script it creates all of my clone platforms but only creates one in game and it disappears and moves as soon as the player gets close any help would be greatly appreciated!

using UnityEngine; using System.Collections; using System.Collections.Generic;

public class ObjectPooler : MonoBehaviour {

 public GameObject pooledObject;

 public int pooledAmount;

 List<GameObject> pooledObjects;

 // Use this for initialization
 void Start () {

     pooledObjects = new List<GameObject> ();

     for (int i = 0; i < pooledAmount; i++) 
     {
         GameObject obj = (GameObject)Instantiate(pooledObject);    
         obj.SetActive (false);
         pooledObjects.Add (obj);
     }
 
 }
 
 public GameObject GetPooledObject ()
 {
     for (int i = 0; i < pooledObjects.Count; i++)
     {
         if(pooledObjects[i].activeInHierarchy)
         {
             return pooledObjects[i];
         }
     }

     GameObject obj = (GameObject)Instantiate(pooledObject);    
     obj.SetActive (false);
     pooledObjects.Add (obj);
     return obj;

 }

}