Keep getting an error for code that works. And I can't figure out why?

So this is line 55 here

Code (CSharp):

1. LettersInv.text += lettersInv[i].ToString();

And this is line 35 here

Code (CSharp):

1. updateInv();

I have assigned the LettersInv.

Code (CSharp):

1. public Text LettersInv;

this is done in the editor.
And the lettersInv variable is never empty.
This is in the Start function

Code (CSharp):

1.  
2.         for(int i = 0; i<3; i++)
3.         {
4.             int c = Random.Range (0, Alphabet.Length - 1);
5.             lettersInv[i] = Alphabet[c];
6.             Debug.Log(lettersInv[i]);
7.         }
8.  

Any help on getting rid of this error? thanks!

 

Since updateInv() is being called from within Update and you're saying it does still do what it's supposed to, I'm assuming what's happening is that updateInv is actually being called before the value of LettersInv is assigned.

Do you get that error only once, or multiple times?

 

UpdateInv is indeed being called from the Update but its inside a if statement so it only runs when LettersInv length is LESS than lettersInv.length.

This is the if statement inside the Update() function

Code (CSharp):

1.         if(LettersInv.text.Length < lettersInv.Length)
2.         {
3.             updateInv();
4.         }

 

I'm not sure since I'm kind of beginner, but I think you could check this line:

Code (CSharp):

1. int c = Random.Range (0, Alphabet.Length - 1);

Random.Range returns a value from min to max, but never max, so I think you could be missing one reference since it will never return last item from Alphabet array. I'm probably wrong, but maybe

Code (CSharp):

1. int c = Random.Range(0, Alphabet.Length);

would work?

 

Check what is null on that line.

Code (csharp):

1.  
2. if (LettersInv == null) Debug.Log("LettersInv == null");
3. if (LettersInv.text == null) Debug.Log("LettersInv.text == null");
4. if (lettersInv == null) Debug.Log("lettersInv == null");
5. if (lettersInv[i] == null) Debug.Log("lettersInv[i] == null");
6. LettersInv.text += lettersInv[i].ToString();
7.