002. Unity3d Tutorial - Health Bar 2/2

i like how this is two tutorials at once. (My you tube is Rokstar234 if you wondering who i am)this is a C# tutorial cause it teaches you the basic Syntax of C# scripting And A very good detailed Unity tutorial. and most of the series can be done in free edition while other may require pro. :)

Hi I've inputted this tutorial twice now and I still can't get the health bar to come up. this is my script:

using UnityEngine;
using System.Collections;

public class PlayerHealth : MonoBehaviour {
public int maxHealth = 100;
public int curHealth = 100;

public float healthBarLength;

// Use this for initialization
void Start () {
healthBarLength = Screen.width / 2;
}

// Update is called once per frame
void Update () {
AddjustCurrentHealth (0);
}
void onGUI(){
GUI.Box(new Rect(10, 10, healthBarLength, 20), curHealth + "/" + maxHealth);
}

public void AddjustCurrentHealth(int adj) {
curHealth += adj;

if(curHealth < 0)
curHealth = 0;

if (curHealth > maxHealth)
maxHealth = 1;

healthBarLength = (Screen.width / 2) * (curHealth / (float)maxHealth);
}
}

Am I doing something wrong? I've gone over it but maybe I missed something.

Thanks. GREAT TUTORIALS.

Hello Petey ! Can you explain the purpose of putting (float) infront of the maxHealth value inside the AdjustCurrentHealth function?