[TheToretto]

Like nobody noticed he's formatting the timer's variable? Come on.

pawn Code:

format(str, sizeof(str), "%d", CountDownTimer);

The tutorial you got this code from is wrong, you should format countvar.

And you don't need 128 cells for just a decimal number, I've changed it to 6, I don't expect from someone to call a countdown for an hour or more, but feel free to increase it if you want.

Final code:

pawn Code:

#include <a_samp>

new countvar = 10;
new CountDownTimer;

public OnFilterScriptInit()
{
    CountDownTimer = SetTimer("CountDown", 1000, true);
    return 1;
}

forward CountDown();
public CountDown()
{
    countvar--;
    new str[6];
    if(countvar == 0)
    {
        KillTimer(CountDownTimer);
        countvar = 4;
    }
    else
    {
        format(str, sizeof(str), "%d", countvar);
        GameTextForAll(str, 1000, 1);
        // uncoment this if you want to test it without getting in game -- printf("%d", countvar); 
    }
}