[CalvinC]

You could create a command that shows a textdraw, and sets a variable to 10:

pawn Код:

new robtime[MAX_PLAYERS];
new robtextdraw;
CMD:rob(playerid, params[])
{
    TextDrawShowForPlayer(playerid, robtextdraw);
    return robtime[playerid] = 10;
}

Then a timer, to decrease the variable by 1 each second, and updates the textdraw:

pawn Код:

forward robcheck();
public robcheck()
{
    foreach(Player, i)
    {
        if(robtime[i] > 0)
        {
            robtime[i] --;
            new string[128];
            format(string, 128, "Time left: %i seconds.", robtime[i]);
            TextDrawSetString(robtextdraw, string);
        }
    }
    return 1;
}

Using zcmd and foreach in the example.