What i did wrong?? Erro CS1519 help pls

using UnityEngine;
using System.Collections;

public class NewBehaviourScript : MonoBehaviour {

public class PlayerHealth;

void Start () {
		PlayerHealth = 100;
	}

void Update () {
	if (PlayerHealth <= 0) {
		Application.LoadLevel ("GameOver");
	}

}

}

Compiler Error CS1519

You didn’t provide a line number to say where the error occured.

However, PlayerHealth is a class, which you cannot set to an integer and you have not defined.

public class NewBehaviourScript : MonoBehaviour {
       public var Health = 100;
       void Start () {
             health = 100;
        }
     
       void Update () {
         if (Health <= 0) {
             Application.LoadLevel ("GameOver");
         }
      }
}

Do some tutorials to get a better understanding of how to use classes.