Global variable

How can I get this to display to EVERYBODY connected to the server?

When I send a message, it only sends to the player who sent it, nobody else..

It is MP connected, all that works - just the message doesn't.

 using System.Collections;
 using System.Collections.Generic;
 using System.IO;
 using System;
 using UnityEngine;
 using UnityEngine.Networking;
 
 public class ServerChat : NetworkBehaviour {
 
     public string MessageOne = null;
     public string MessageTwo = null;
     public string MessageThree = null;
     public string MessageFour = null;
     public string MessageFive = null;
 
     public int lastMsg = 0;
 
     [SyncVar] public bool isChatting = false;
     [SyncVar] public string _toSend = null;
 
     void Start()
     {
         
     }
 
     void OnGUI()
     {
         if (!isLocalPlayer)
             return;
 
         GUI.contentColor = Color.red;
 
         if (MessageOne != null)
             GUI.Label (new Rect (30, Screen.height / 2, (MessageOne.Length * 10), 25), MessageOne); 
 
         if (MessageTwo != null)
             GUI.Label (new Rect (30, Screen.height / 2 + 20, (MessageTwo.Length * 10), 25), MessageTwo);
 
         if (MessageThree != null)
             GUI.Label (new Rect (30, Screen.height / 2 + 40, (MessageThree.Length * 10), 25), MessageThree);
 
         if (MessageFour != null)
             GUI.Label (new Rect (30, Screen.height / 2 + 60, (MessageFour.Length * 10), 25), MessageFour);
 
         if (MessageFive != null)
             GUI.Label (new Rect (30, Screen.height / 2 + 80, (MessageFive.Length * 10), 25), MessageFive);
 
         if(isLocalPlayer){
             if (isChatting) {
                 _toSend = GUI.TextField (new Rect (30, Screen.height / 2 + 100, 150, 25), _toSend);
                 if (GUI.Button (new Rect (200, Screen.height / 2 + 100, 50, 25), "Send")) {
                     OrganizeNewMessage (_toSend);
                 }
             }
 
             Event e = Event.current;
 
             if (e.keyCode == KeyCode.Return) {
                 OrganizeNewMessage (_toSend);
             }
         }
     }
 
     [Command]
     void CmdStopChatting()
     {
         isChatting = false;
     }
 
     [Command]
     void CmdStartChatting()
     {
         isChatting = true;
     }
 
     void LogText(string section, string message)
     {
         DateTime dt = DateTime.Today;
         string documents = System.Environment.GetFolderPath (System.Environment.SpecialFolder.MyDocuments).Replace("\\", "/") + "/Game/";
         string files = documents + section + "_" + String.Format ("{0:d_M_yyyy}", dt) + ".txt";
 
         using (System.IO.StreamWriter file = new System.IO.StreamWriter(@files, true))
         {
             file.WriteLine(message);
         }
     }
 
     void OrganizeNewMessage(string message)
     {
         string name = GetComponent<LocalPlayerManage> ().PlayerName;
 
         LogText ("ChatLog", name + ": " + message);
 
         if (message.Length == 0) {
             CmdStopChatting ();
             _toSend = "";
             return;
         }
 
         lastMsg ++;
 
         if (lastMsg == 0)
             lastMsg = 1;
 
         if (lastMsg > 5) {
             MessageOne = MessageTwo;
             MessageTwo = MessageThree;
             MessageThree = MessageFour;
             MessageFour = MessageFive;
 
             lastMsg = 5;
         }
 
         switch (lastMsg) 
         {
                 case 1:
                 MessageOne = name + ": " + message;
                     break;
 
                 case 2:
                 MessageTwo = name + ": " + message;
                     break;
 
                 case 3: 
                 MessageThree = name + ": " + message;
                     break;
 
                 case 4:
                 MessageFour = name + ": " + message;
                     break;
 
                 case 5:
                 MessageFive = name + ": " + message;
                 break;
         }
 
         CmdStopChatting ();
         _toSend = "";
     }
 
     void Update()
     {
         if (!isLocalPlayer)
             return;
         
         if (!isChatting && Input.GetKeyDown (KeyCode.T)) {
             CmdStartChatting ();
         }
     }
 }