Instantiate a GUIImage as a Child, Problems

When I spawn the Image, its been placed in the hierarchy outside of the canvas. I have som child of child of child, in the canvas, and I want it be instantiated as a child for a specific parent.

This is the code

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class SpawnItemForInventory : MonoBehaviour {
5.     public GameObject[] Items;
6.     public GameObject DenSelv;
7.     // Use this for initialization
8.     void Start () {
9.         DenSelv = this.gameObject;  
10.     }
11.  
12.     public void AddItem (int ItemNumber)
13.     {
14.         Transform go = Instantiate(Items[ItemNumber], this.transform.position, Quaternion.identity) as Transform;
15.         go.transform.parent = DenSelv.transform;
16.     }
17. }
18.  

Im getting this every when AddItem function is called from outside:

Code (CSharp):

1. NullReferenceException: Object reference not set to an instance of an object
2. SpawnItemForInventory.AddItem (Int32 ItemNumber) (at Assets/SpawnItemForInventory.cs:20)
3. UnityEngine.GameObject:BroadcastMessage(String, Object)
4. BuyItem:Buy() (at Assets/BuyItem.cs:24)
5. UnityEngine.EventSystems.EventSystem:Update()

I would like to mention that it instantiates the right prefab, just at the wrong "location"

Do you know what is wrong?

 

"as Transform" is just wrong, since Instantiate should return a GameObject:

Code (CSharp):

1. Transform tfm = Instantiate<GameObject>(Items[ItemNumber]).transform;
2. tfm.SetParent(DenSelv.transform)
3. tfm.localPosition = Vector3.zero;
4. tfm.localRotation = Quaternion.identity;
5.  

 

Thanks SkaredCreations

It worked!