Script only work when I inspected it at least once

Hi everybody, thanks for reading.

My problem:

An object is getting a class array from a manager.

It works perfectly when I inspected the manager gameobject at least once during the play mode.

It doesn't work (null reference) when Im Not inspecting the manager gameobject.

May I know what the problem is?


Script:

Object A:

Code (CSharp):

1.  
2. void Start()
3. {
4. SetUpStat()
5. }
6.  
7. void SetUpStat()
8. {
9. Manager.Instance.cornStatArray[_inventoryPlaceNum].inventoryPlaceNum = _inventoryPlaceNum;
10. }
11.  

Manager:

Code (CSharp):

1.  
2. public class LabManager : MonoBehaviour
3. {
4. public class CornStat
5. {
6. public int inventoryPlaceNum;
7. public int sweet;
8. public int juicy;
9. public int size;
10. public string quality;
11. public int statPoint;
12. }
13. public CornStat[] cornStatArray;
14.  
15. public static LabManager Instance;
16.  
17. void Awake()
18. {
19. if (Instance == null)
20. {
21. Instance = this;
22. }
23. else if (Instance != this)
24. {
25. Destroy(gameObject);
26. }
27. DontDestroyOnLoad(gameObject);
28. }
29.  
30. void Start()
31. {
32. cornStatArray = new CornStat[_maxInventorySpaceNumber];
33. }
34.  

Thanks for helping

 

Please edit your post to add code-tags and properly layout the code to make it easier for people to help you:
https://forum.unity.com/threads/using-code-tags-properly.143875/

Please post the exact/entire error message you get.