step = 0;
if (global.flag[915] == 19)
{
    global.flag[928] = 0;
    con = 1;
    global.flag[20] = 0;
    blackscreen = scr_marker(-10, -10, spr_whitepx_10);
    blackscreen.image_blend = c_black;
    blackscreen.image_xscale = 100;
    blackscreen.image_yscale = 100;
}
else
{
    con = 0;
    instance_destroy();
}