Tree chopping

I´ve made a script to cut trees when the player is closer than 10 units! Why the code isnt working? I get no errors!!

using UnityEngine; using System.Collections;

public class TreeHealth : MonoBehaviour { public int Health; public Transform player;

 void Start () 
 {    
     
 }
 
 void Update () 
 {
     if(Health < 0) 
     {
         if(Vector3.Distance(player.transform.position, player.position) < 10f)
         {
             if(Input.GetKeyDown(KeyCode.Mouse0))
             {
                 Ray ray = new Ray (player.transform.position, player.transform.forward);
                 RaycastHit hit;
                 
                 if(Physics.Raycast(ray,out hit, 10f))
                 {
                     if(hit.collider.gameObject == gameObject)
                     {
                         --Health;
                     }
                 }
             }
         }
     }
     
     if (Health <= 0)
     {
         Destroy(gameObject);
     }
 }

}