Displaying text on trigger enter

Hello everyone, I have a question for you all today. I have been trying to display some text telling a player to turn back or be killed so that they don’t fall off the map, but I am having some trouble actually displaying it on the screen. My code so far is as follows:

using UnityEngine;
using System.Collections;

public class Boundaries : MonoBehaviour 
{
	//Declaring variables
    bool crossedBoundary;
    void OnTriggerEnter(Collider other) 
{
	//Telling game to actiavte boolean
	if(other.gameObject.tag == "Player") 
	{
		crossedBoundary = true;
	}
}
void OnGUI () 
{
	//If the boolean is active, display the text
	if (crossedBoundary == true) 
	{
		GUI.Label(Rect(200, 100, 0, 0), "Turn back or die!");
	}
}
}

Well, one clear issue is that you forgot to put “new” before the “Rect” call. It should be:

 GUI.Label(new Rect(200, 100, 0, 0), "Turn back or die!");