[Jeffry]

At Top of your GM:

pawn Код:

new GMX_Count = 30;

pawn Код:

COMMAND:Gmx(playerid, params[])
{
    if(!IsPlayerAdmin(playerid)) return SendClientMessage(playerid, 0xFF0000FF, "ERROR: You have to be an Admin.");
    SetTimer("ServerGMX",1000,1);//2 seconds with no repeat
    new str[128];
    format(str, sizeof(str), "~r~Server is restarting - ~y~Please Wait.~n~~r~%d~b~ seconds left.",GMX_Count);
    GameTextForAll(str,30000,3);
    return 1;
}

pawn Код:

forward ServerGMX();
public ServerGMX()
{
    GMX_Count--;
    if(GMX_Count <= 0) 
    {
        GameTextForAll("~r~Server is now restarting!",30000,3);
        return SendRconCommand("gmx");
    }
    new str[128];
    format(str, sizeof(str), "~r~Server is restarting - ~y~Please Wait.~n~~r~%d~b~ seconds left.",GMX_Count);
    GameTextForAll(str,30000,3);
    return 1;
}

Should work.