Send Player Properties (kill\death)

[Elmo loves cookies]

Instance Bomb with (int) ID player owner:

1. GameObject b = (GameObject)Instantiate(bombPrefab, transform.position, transform.rotation);
2.             b.SendMessage("setOwner", tno.ownerID);

Bomb Invoke Explode on other player Trigger:

1.     private void OnTriggerEnter(Collider other)
2.     {
3.         if (!dead && other.CompareTag("Bomb"))
4.         {
5.             //well Here I have ID Owner Bomb:
6.             int p = other.GetComponent<Bomb>().owner;
7.             // and I can take Player like this TNManager.GetPlayer(p), but how I can send him(TNManager.GetPlayer(p) to his properties: int kills++;
8.             // ?
9.         }
10.     }

[ArenMook]

Object.Instantiate is Unity. It's local.

TNManager.Instantiate is networked. That's what you should be using instead. It doesn't have a return value because all network instantiation is disabled. Pass your parameters to the instantiate function as a part of your custom RCC. Check the tutorials for more information -- this is covered pretty well.