[PHOTON]RPC set active wont work

[PunRPC]
public void ShowShield (bool active){
    ability.shield.SetActive (active);
}
GetComponent <PhotonView>().RPC ("ShowShield", PhotonTargets.AllBuffered, true);

Why won’t this show in the other clients? It shows in my client but not to other people. Why?

First check if the rpc executes on other clients via debug, if not then make sure you send it with your owned view.