Can't change public int in other class

Questions & Answers
1

Hello, everyone I’ve issue about change public int variable. Let me show you,

public int createRandomSprite;

first I created public int variable.

CreateSprite createSprite;
void Update()
    {
        if (Input.GetKeyDown(KeyCode.UpArrow))
        {
            createSprite.createRandomSprite= 10;
        }
    }

And I’m created createSprite for reach the other class. And when the play press “uparrow” key I want to set createRandomSprite to 10 but I get error,

“Object reference not set to an instance of an object” it’s can’t reference, what need I do?

2

You have to initialize createSprite before using it. Default value for object references is null.