Hello, I am new to Unity so I've been using several tutorials to try different things

I used the Health Bar tutorial of http://www.burgzergarcade.com/hack-slash-rpg-unity3d-game-engine-tutorial and made some modifications to create mine.

And I want to know: is it possible to make a GUI.Box Rectangle follow a character's position so that it hovers above its head?

I tried using the ObjectLabel script http://www.unifycommunity.com/wiki/index.php?title=ObjectLabel

but this only works for GUI Text/Textures

I think it could be done if I modify the z position of the rectangle to follow the camera but I have tried several things and I can't make it work.

EDIT: I added the corrected script to help if someone had the same problem as me:

using UnityEngine; using System.Collections;

public class PlayerHealth : MonoBehaviour {

public int maxHealth = 100;
public int curHealth = 100;

public float healthBarLength;

/*public int healthBarWidth;
public int healthBarHeight;*/
public GUISkin healthBarSkin;
public Vector3 screenPosition;

// Use this for initialization
void Start () {

    healthBarLength = Screen.width / 8;

}

// Update is called once per frame
void Update () {

    screenPosition = Camera.main.WorldToScreenPoint(transform.position);
    screenPosition.y = Screen.height - screenPosition.y;

    AddjustCurrentHealth(0);

}

private bool _mouseEnter = false;

void OnGUI() {
    if(!_mouseEnter) return;
//draw your GUI stuff here with Unity's OnGUI code - see ref for details
    GUI.skin = healthBarSkin;

    GUI.Label(new Rect(screenPosition.x - 36, screenPosition.y - 35, Screen.width / 8, 7), "Health");
    GUI.Box(new Rect(screenPosition.x - 36, screenPosition.y - 35, healthBarLength, 7), "Health");
}
void OnMouseEnter()
{
    _mouseEnter = true;
}
void OnMouseExit()
{
    _mouseEnter = false;
}

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

        if(curHealth <= 0)
            Destroy(gameObject);

        if(curHealth > maxHealth)
            curHealth = maxHealth;
        if(maxHealth < 1)
            maxHealth = 1;

        healthBarLength = (Screen.width / 8) * (curHealth / (float)maxHealth);
    }}