[Nero_3D]

Ok, so with this he wont be able to see the text what other wrote (if Invisable isnt 0)

pawn Код:

public OnPlayerText(playerid, text[])
{
    for(new i; i < MAX_PLAYERS; i++)
    {
        if(GetPVarInt(i, "Invisible") == 0)
            SendPlayerMessageToPlayer(i, playerid, text);
    }
    return 0;
}

But he still can write in the chatbox and other will see it (even he self doesnt)