Burgzergarcade tutorial

Hello uhm i am doing the Burgzergarcades tutorial for over like 2 weeks now and i want to change some of the specs for my vital script to be changed to height not the width cause my GUI.Texture is a circle.Its from the Burgzergarcade free assets.Heres my script:

using UnityEngine; using System.Collections;

 public class VitalBar : MonoBehaviour {
     public bool _isPlayerHealthBar;        //This boolean value tells us if this is the playerHealthBar or the mob healthbar
     
     private int _maxBarHeight;                //This is how large the vital bar can be if the target is at 100% health.
     private int _curBarHeight;                //This is the current height of the vital bar.
     private GUITexture _display;
 
     // Use this for initialization
     void Start () {
 //        _isPlayerHealthBar = true;
         
         _display = gameObject.GetComponent<GUITexture>();
         
          _maxBarHeight = (int)_display.pixelInset.width;
         
         OnEnable();
     }
     
     // Update is called once per frame
     void Update () {
     
     }
     
     //This method is called when the GameObject is enabled.
     public void OnEnable() {
         if(_isPlayerHealthBar)
             Messenger<int, int>.AddListener("player health update", OnChangeHealthBarSize);
         else
             Messenger<int, int>.AddListener("mob health update", OnChangeHealthBarSize);
     }
     
     //This method is called when the GameObject is disabled.
     public void OnDisable() {
           if(_isPlayerHealthBar)
               Messenger<int, int>.RemoveListener("player health update", OnChangeHealthBarSize);
         else
               Messenger<int, int>.RemoveListener("mob health update", OnChangeHealthBarSize);        
     }
     
     //This method will calculate the total size of the health bar in relation to the % to the health the target has left
     public void OnChangeHealthBarSize(int curHealth, int maxHealth) {
 //        Debug.Log("We heard an event: curHeal = " + curHealth + " - maxHealth = " + maxHealth);
         
         _curBarHeight = (int)((curHealth / (float)maxHealth) * _maxBarHeight);            //This calculates the current bar length base on the players health %.
         
         _display.pixelInset = new Rect(_display.pixelInset.x, _display.pixelInset.yMin, _curBarHeight, _display.pixelInset.height);
         
     }
     
     
     //Setting the healthBar to the player or mob
     public void SetPlayerHealthBar(bool b) {
         _isPlayerHealthBar = b;
     }
 }