[nickyW]

pawn Код:

new CountDownTime = 10; // 10 seconds, countdown
new Timer;
forward Timer(playerid);

public Timer(playerid)
{
     new string[128];
     CountDownTime--; 
     if(CountDownTime == 0) {
            KillTimer(Timer);
            CountDownTime= 4; 
     } else
     {
           format(string, sizeof(string), "%d", CountDownTime);
           GameTextForPlayer(playerid, string, 1000, 1);
     }
     return 1;
}

Place this there where the timer must to start
Timer = SetTimer("CountDownTime", 1000, false);