Some KeyCodes not working

Unity Engine
1

Some keycodes are working in a script I have and some are not. For example:
else if (Input.GetKeyDown(KeyCode.Return)){ works
but

else if (Input.GetKeyDown(KeyCode.Delete)){

does not.
Any ideas why?

2

Can you post the script in its entirety? (Or at least the function from which the above excerpts were taken?)

3

Sure.

else if (Input.GetKeyDown(KeyCode.LeftShift) || Input.GetKeyDown(KeyCode.RightShift)){
		shiftOn = 1;
		highlight.transform.localPosition.x = .04;
	}
	else if (Input.GetKeyDown(KeyCode.CapsLock)){
		print ("CapsLock");
		if (shiftOn < 2){
			shiftOn = 2;
			highlight.transform.localPosition.x = 0.935;
		}
		else {
			shiftOn = 0;
			highlight.transform.localPosition.x = 2;
		}
	}
	else if (Input.GetKeyDown(KeyCode.Delete)){
		DeleteLetter();
	}
	else if (Input.GetKeyDown(KeyCode.Return)){
		WriteBookInfo();
		inputLineText.transform.position.y = 10;
		inputTextBG.transform.position.y = 10;
	}
	else if (Input.GetKeyDown(KeyCode.RightArrow)){
		EditRight();
	}
	else if (Input.GetKeyDown(KeyCode.LeftArrow)){
		EditLeft();
	}

Delete and Caps lock don’t work. The others do.

4

It doesn’t look like you got the whole function in there. (It would be useful to see the function in its entirety.)