Variables in GUI not updating/changing? (javascript)

I’m working in javascript and attempting to make a very simple battle system. The issue is, I have to declare the players’ and monsters’ health in an if statement (because there are different player classes and monsters), but whenever I do this once the calculations in the if statement are done (monsterHealth -= playerAttack) the monster health doesn’t update because the condition of the if statement (the current monster’s original stats) is still active. Does anyone know how I might fix this? (the problem happens both with the playerHealth and the monsterHealth).

This is the class for the monster stats:

#pragma strict

public class MonsterData extends MonoBehaviour
    {
        static public var monsterHealth : int;
  		static public var monsterArmor: int;
        static public var monsterAttack : int;
      	static public var curMonster : String;
        static public var totDamage1 : int = PlayerStats.strength + PlayerStats.weaponDamage1 - monsterArmor;
       	static public var totDamage2 : int = PlayerStats.strength + PlayerStats.weaponDamage2 - monsterArmor;
       	static public var monNum : Monster = new Monster(0);
       	
        public class Monster
        {
       		
        	public function Monster(t : int)
       			{	
       			
        			totDamage1 = PlayerStats.strength + PlayerStats.weaponDamage1 - monsterArmor;
					totDamage2 = PlayerStats.strength + PlayerStats.weaponDamage2 - monsterArmor;
		
        	if(t == 1)
        		{
        			curMonster = "Mutated Wolf";
            		monsterHealth = 16;
            		monsterArmor = 2;
            		monsterAttack = (Random.Range(2, 4));
            	}
        	}
        }
}

And this is the GUI that runs the battle:

if(GameGUI.gamestage == -201)
	{
		if(GameGUI.backNum == 4)
		{
			GUI.skin = nightText;
		}
		else
		{
			GUI.skin = text;
		}
		
		GUI.Box(Rect(Screen.width/2 - 250, Screen.height/2 - 300, 500, 500), Mon.curMonster);
		GUI.Box(Rect(Screen.width/2 - 250, Screen.height/2 - 250, 500, 500), "" + Mon.monsterHealth);
		
		GUI.Box(Rect(Screen.width/2 - 250, Screen.height/2 + 200, 500, 500), "Me");
		GUI.Box(Rect(Screen.width/2 - 250, Screen.height/2 + 250, 500, 500), "" + PlayerStats.playerHealth);
		
		if(GUI.Button(Rect(Screen.width/2 - 250, Screen.height/2 - 100, 500, 35), PlayerStats.attack1))
		{
			Mon.monsterHealth -= Mon.totDamage1;
			PlayerStats.playerHealth = PlayerStats.playerHealth - Mon.monsterAttack;
			Mon.monsterAttack = (Random.Range(2, 4));
		}
		if(GUI.Button(Rect(Screen.width/2 - 250, Screen.height/2 - 50, 500, 35), PlayerStats.attack2))
		{
			Mon.monsterHealth -= Mon.totDamage2;
			PlayerStats.playerHealth = PlayerStats.playerHealth - Mon.monsterAttack;
			Mon.monsterAttack = (Random.Range(2, 4));
		}
		
		if(Mon.monsterHealth <= 0)
		{
			Mon.monsterHealth = 0;
			Debug.Log("0");
		}
		
		if(PlayerStats.playerHealth == 0)
		{
			GameGUI.gamestage = -3;
		}
		
	}

this works for me.

var Bug : GameObject;
var Boom : Transform;
var dammage : int = 10;
var health : float = 100;
private var Dead : boolean;
function OnTriggerEnter2D (col : Collider2D) 
	{
	children = GetComponentsInChildren.<Renderer>();
	if (col.tag == "Bullet"){
		health+=-dammage;
		}
		}
function Update (){
if (health<0){
Dead = true;
}
if (Dead==true){
Destroy(Bug,0);
}
}