hey guys. i have a health bar script and i want it to lower the health when my character lands from a high place. here's the 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)
         curHealth = maxHealth;

       if(maxHealth < 1)
         maxHealth = 1;

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

do u think some c# code would do the trick? thanks