Array Null reference

hey guys, I'm with bug that was not to happen, when I try to take an element of an array this error shows: Null reference exception

Here the script

Code (csharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4.  
5. [System.Serializable]
6. public class Items{
7. public string itemName;
8. public int Amount;
9. }
10.  
11. public class New : MonoBehaviour{
12. public Items [] X;
13. void Start(){
14. X =new Items[4];
15. }
16. void OnGUI(){
17. GUI.Label(newRect(Screen.width /2,Screen.height *.2f,Screen.width,Screen.height),"Name: "+ X [0].itemName +" Amount: "+ X [0].Amount);
18. GUI.Label(newRect(Screen.width /2,Screen.height *.4f,Screen.width,Screen.height),"Name: "+ X [1].itemName +" Amount: "+ X [1].Amount);
19. GUI.Label(newRect(Screen.width /2,Screen.height *.6f,Screen.width,Screen.height),"Name: "+ X [2].itemName +" Amount: "+ X [2].Amount);
20. GUI.Label(newRect(Screen.width /2,Screen.height *.8f,Screen.width,Screen.height),"Name: "+ X [3].itemName +" Amount: "+ X [3].Amount);
21. }
22. }
23.  

someone can help me ?

thks in advance

 

you need first initialize all items in massive. when you write

1. X =new Items[4];

it means that you allocate memory for 4 elements in massive.

After this you need make

Code (CSharp):

1. for(int i = 0; i < 4; i++)
2. X[i] = new Items();