if (global.flag[362] == 1 && global.flag[382] == 0)
{
    layer_set_visible("TILES_LOCKED_DOOR", 0);
    instance_destroy();
}
if (instance_exists(obj_npc_sign))
{
    with (obj_npc_sign)
    {
        if (global.flag[362] == 1 && global.flag[382] == 0)
            instance_destroy();
    }
}