How to change offline to online mode in photon unity network

to come offline mode i have created (working fine but once i came offline then unable to come again online)

 if(GUI.Button(new Rect (5, 115, 60,16),"", Offline_but.customStyles [0])){
					change_online = Offline_but;
					if (PhotonNetwork.connected) {
						Debug.Log ("connected, so disconnect");
						PhotonNetwork.Disconnect ();
					}
					PhotonNetwork.offlineMode = true;
					GameManager.instance.player.CreateAvatar(new_playerPos, new_playerRot);
					
				}

Then how to come online ???

if(GUI.Button(new Rect (5, 10, 60,16),“”, Online_but.customStyles [0]))
{

change_online = Online_but;

PhotonNetwork.offlineMode = false;

if (PhotonNetwork.connectionStateDetailed == PeerState.PeerCreated)
{

// Connect to the photon master-server. We use the settings saved in PhotonServerSettings (a .asset file in this project)

PhotonNetwork.ConnectUsingSettings(“1.0”);

}

GameManager.instance.player.CreateAvatar(new_playerPos, new_playerRot);

}

Hi guys, I got solution.
if any1 wants online/ offline mode see here.

void Connect() {
	PhotonNetwork.ConnectUsingSettings("1.0");
}
	
void OnJoinedLobby() {
	Debug.Log ("OnJoinedLobby");
	PhotonNetwork.JoinRandomRoom();
}
	
void OnPhotonRandomJoinFailed() {
	Debug.Log ("OnPhotonRandomJoinFailed");
	PhotonNetwork.CreateRoom(null);
}
	
void OnJoinedRoom() {
	Debug.Log ("OnJoinedRoom");
	GameManager.instance.player.CreateAvatar(new_playerPos, new_playerRot);
}

void OnGUI()
{
     if(GUI.Button(new Rect (5, 115, 60,16),"", Offline_but.customStyles [0]))
     {
		if(!PhotonNetwork.offlineMode)
		{
		     change_online = Offline_but;
		     if (PhotonNetwork.connected)
                  {
			  PhotonNetwork.Disconnect ();
		      }
		      PhotonNetwork.offlineMode = true;
		      PhotonNetwork.JoinRandomRoom();
		}
	}

   if(GUI.Button(new Rect (5, 10, 60,16),"", Online_but.customStyles [0]))
    {
		if(PhotonNetwork.offlineMode)
		{
			change_online = Online_but;
		PhotonNetwork.Destroy(GameManager.instance.player.character);
			Connect();
		}		
	}

}