Help with assigning array data on scriptable object

For my current project I have to read data from CSV files and I'd like to store the data in scriptable objects.
When I try to assign ordinary fields I don't get any problems but if I try to assign an array I get a NullReferenceException.

The following code works:

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.Collections.Generic;
4. using System.Linq;
5. [System.Serializable]
6. public class EachLevel
7. {
8.      public uint mLevelID;
9.      public uint mSceneID;
10. };
11. [System.Serializable]
12. public class LevelData : ScriptableObject
13. {
14.      public EachLevel lvl;
15.      public void Init ( uint id1, uint id2 )
16.      {
17.          lvl.mLevelID = id1;
18.          lvl.mSceneID = id2;
19.      }
20. }

But this one does not:

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.Collections.Generic;
4. using System.Linq;
5. [System.Serializable]
6. public class EachLevel
7. {
8.      public uint mLevelID;
9.      public uint mSceneID;
10. };
11. [System.Serializable]
12. public class LevelData : ScriptableObject
13. {
14.      public EachLevel[] lvl;
15.      public void Init ( uint id1, uint id2 )
16.      {
17.          lvl = new EachLevel[2];
18.          lvl[0].mLevelID = id1;
19.          lvl[0].mSceneID = id2;
20.          lvl[1].mLevelID = id2;
21.          lvl[1].mSceneID = id1;
22.      }
23. }

Any idea why?

 

You've created a new array but you haven't created any EachLevel objects.

Code (csharp):

1. lvl = new EachLevel[2];
2. lvl[0] = new EachLevel();
3. lvl[0].mLevelID = id1;
4. lvl[0].mSceneID = id2;
5. lvl[1] = new EachLevel();
6. lvl[1].mLevelID = id2;
7. lvl[1].mSceneID = id1;

 

Oh, I din't know I had to do that despite using arrays and classes for so long. I tried it and it works perfectly. Thank you! I had also posted this question yesterday in Unity answers but it seems that the forums are more active than unity answers.