public OnGameModeInit()
{

    new value = random(5555555555) + 1111111111; //Can be any value.
    printf("%s", HideNumbers(value));
    return 1;
}

stock HideNumbers(numbertohide)
{
    new length = floatround(floatlog(numbertohide) + 1);
    new string[20];
    format(string, sizeof(string), "%d", numbertohide);
    if(length < 8) return string;
    for(new i = 0; i < length; i++)
    {
        if(i < (length / 2) || i == (length - 2)) continue;
        else string[i] = '*';
    }
    return string;
}