GameObject.Find() error

SetDifficulty = GameObject.Find("DifficultySlider").GetComponent<Slider>().value;

if (SetDifficulty == 1)
{
GameObject.Find("Manager").GetComponent<DropSpawning1>().spawnCooldown1 = 0.20f;
GameObject.Find("_Constant").GetComponent<DropSpawning>().spawnCooldown = 0.20f;
}
if (SetDifficulty == 2)
{
GameObject.Find("_Constant").GetComponent<DropSpawning>().spawnCooldown = 0.125f;
GameObject.Find("Manager").GetComponent<DropSpawning1>().spawnCooldown1 = 0.125f;
}
if (SetDifficulty == 3)
{
GameObject.Find("_Constant").GetComponent<DropSpawning>().spawnCooldown = 0.05f;
GameObject.Find("Manager").GetComponent<DropSpawning1>().spawnCooldown1 = 0.05f;
}



For some reason this code keeps giving me an error message that reads :
NullReferenceException: Object reference not set to an instance of an object
ButtonManager.Update ()

 

So either it can't find the object or it can't find the DropSpawning/DropSpawning1/Slider component on the object it that it does find. We can't really help with that - it should tell you what line gives you the error to help point you in the right direction.

 

Also, a line number alone may not help determine whether it's the object or the component since you're dereferencing twice in the same line. Break up the code and see where it errors, or better yet, run it in the debugger and see what's going on?

 

It is now talking about the line that looks for the "Manager" GameObject. I might have a solution, does it matter that "Manager" is in another scene than this script itself?

 

Yes. GameObject.Find can only find objects that are currently in the scene hierarchy.