Bullet owner network (javascript)

I'm currently trying to create a simple system on a kill counter for a multiplayer FPS game like most FPS out there where

1. Player get 1 point on killing someone and opponent death count increase by 1

2. Save variable on which player killed who

I already have a script that shows who killed who just having problem getting those variables.

I have this on my bulletScript which is called every time a bullet is instantiated over the network

on Start

 if(networkView.isMine)
 {
     player = gameObject.FindWithTag("GameManager").GetComponent(ScoreBoard);
     killedBy = player.playerName;
 }

In Update

 var enemyHit : GameObject = Hit.collider.gameObject;
 if(enemyHit.tag == "Player" && !networkView.isMine)
 {
         if(enemyHit.collider.gameObject.GetComponent(PlayerNetwork).health <= 0)
         {
         enemyHit.collider.SendMessageUpwards("Kill", killedBy, SendMessageOptions.DontRequireReceiver);
         }
 }
 Destroy(gameObject);

Getting all kind of problems, Kill function doesn't seem to get called even though i put a Debug.Log(stuff); to show if anything happens. I can hit other players and they do loose health but just kinda getting lost in all this, any help would be great