Using custom order status

Hello,

I have a custom order status that I created using this code:

function wpblog_wc_register_post_statuses() {
register_post_status( 'wc-shipping-progress', array(
'label' => _x( 'Shipping In Progress', 'WooCommerce Order status', 'text_domain' ),
'public' => true,
'exclude_from_search' => false,
'show_in_admin_all_list' => true,
'show_in_admin_status_list' => true,
'label_count' => _n_noop( 'Approved (%s)', 'Approved (%s)', 'text_domain' )
) );
}
add_filter( 'init', 'wpblog_wc_register_post_statuses' );

function wpblog_wc_add_order_statuses( $order_statuses ) {
$order_statuses['wc-shipping-progress'] = _x( 'Shipping In Progress', 'WooCommerce Order status', 'text_domain' );
return $order_statuses;
}
add_filter( 'wc_order_statuses', 'wpblog_wc_add_order_statuses' );

But when I try to select it as a trigger for a follow-up email it doesn’t show on the list. What am I missing?

Awesome plugin btw.

Thnx