Gif Record GameMaker

/// @description
var rec_pressed = keyboard_check_pressed(ord("H"))

if (rec_pressed)
{
    if (!recording)
    {
        recording = true
        var appw = surface_get_width(application_surface)
        var apph = surface_get_height(application_surface)
        gif = gif_open(appw, apph)
    }
    else
    {
        recording = false
        var path = get_save_filename("knife_life|*.gif", "" +
            string_format(current_day, 2, 0) + "-" + string_format(current_month, 2, 0) + "-" + string(current_year) + "   " +
                string_format(current_hour, 2, 0) + "|" + string_format(current_minute, 2, 0) + "|" + string_format(current_second, 2, 0) + ".gif")


            //string(current_time) + ".gif")
        gif_save(gif, path)
    }
}

if (recording)
{
    gif_add_surface(gif, application_surface, 2)
}