example from nolf source

if (hClientTarget)
		{
			uint32 nTargetID = g_pLTServer->GetClientID (hClientTarget);
			uint32 nPlayerID = g_pLTServer->GetClientID (hClientPlayer);

			CAutoMessage cMsg;
			cMsg.Writeuint8(MID_PLAYER_SCORED);
			cMsg.Writebool(false);
			cMsg.Writeuint32(nTargetID);
			cMsg.Writeuint32(nPlayerID);
			g_pLTServer->SendToClient(cMsg.Read(), LTNULL, MESSAGE_GUARANTEED);
		}

		if( g_pGameServerShell )
		{
			g_pGameServerShell->SetUpdateGameServ();
		}