Custom Genesis blog page loop with exclude posts from one category

Custom Genesis Loop.php

<?php /*
Template Name: Exclude Categories
*/ 

/** Custom Genesis loop */
remove_action( 'genesis_loop', 'genesis_do_loop' );
add_action( 'genesis_loop', 'child_do_custom_loop' );
 
function child_do_custom_loop() {
 
    global $paged;
    global $query_args; // grab the current wp_query() args
    $args = array(
        'category__not_in' => -30, // exclude posts from category i.d 30
        'paged'            => $paged, 
    );
 
    genesis_custom_loop( wp_parse_args($query_args, $args) );
 
}

genesis();