Filter and Sort LearnDash Lessons

I’m trying to create a custom single post content template that shows a LearnDash course’s lessons. I’ve created custom code to filter the query, but it’s not filtering. I’m still getting used to the new GenerateBlocks GUI. I’m supposed to apply the class to the query block, right? Not the looper or loop item. I’ve applied the am-filter-course class to the query block but it has no effect. Can you assist?

add_filter('am_generateblocks_query_loop_args', function($query_args, $attributes) {
    if (!empty($attributes['className']) && $attributes['className'] === 'am-filter-course') {
        if (is_singular('sfwd-courses')) {
            $course_id = get_the_ID();

            // filter for current course
            $query_args['meta_query'] = array(
                array(
                    'key'     => 'course_id',
                    'value'   => $course_id,
                    'compare' => '=',
                ),
            );

            // Add lesson ordering based on course_steps
            if (isset($query_args['post_type']) && $query_args['post_type'] === 'sfwd-lessons') {
                // Get all course steps (lessons, topics, quizzes)
                $course_steps = learndash_get_course_steps($course_id);

                // Filter to include only lessons (sfwd-lessons)
                $lesson_ids = array();
                foreach ($course_steps as $step_id) {
                    if (get_post_type($step_id) === 'sfwd-lessons') {
                        $lesson_ids[] = $step_id;
                    }
                }

                // If there are lessons, modify the query to use post__in
                if (!empty($lesson_ids)) {
                    $query_args['post__in'] = $lesson_ids;
                    $query_args['orderby'] = 'post__in'; // Respect the order of post__in
                    $query_args['posts_per_page'] = -1; // Ensure all lessons are included
                }
            }
        }
    }
    return $query_args;
}, 10, 2);