Unity - Basic player damage

DamagePlayer.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class DamagePlayer : MonoBehaviour
{
    public int damageToGive;

    public void OnTriggerEnter(Collider other)
    {
        if (other.gameObject.tag == "Player")
        {
            other.gameObject.GetComponent<PlayerHealthManager>().DamagePlayer(damageToGive);
        }
    }
}