Pressure Plate Damage

I made a pressure plate that will deal damage, but what I have for the trigger isnt working. It is coded in C#
`using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
void OnTriggerExit(Collider other) {
PlayerHealth ph = (PlayerHealth)target.GetComponent(“PlayerHealth”);

Thanks, Ill try that. By the way, the tick is a typo.

Still doesnt seem to be working