[Patrick]

pawn Код:

CMD:lockserver(playerid, params[])
{
    new string[128];

    if(!IsPlayerLoggedIn(playerid))     
        return SendClientMessage(playerid, COLOR_GREY, "You need to login first before using any command.");

    if(isnull(params))
        return SendClientMessage(playerid, COLOR_WHITE, "[Usage]: /lockerserver [password]");

    format(string, sizeof(string), "password %s", params);
    SendRconCommand(string);

    format(string, sizeof(string), "AdmCmd : %s %s has Locked The Server (PASSWORD: %s) ", RPALN(playerid), RPN(playerid), params);
    SendAdminMessage(COLOR_RED, 1, string);
    
    format(string, sizeof(string), "AdmCmd: %s has locked the server.", RPN(playerid));
    SendClientMessageToAll(COLOR_LIGHTRED, string);
    return 1;
}

You're using the wrong Placeholder