Add a Custom Post Type for PMPro Series Add On

pmpro-add-post-type-to-series.php

<?php
/**
 * This allows PMPro Series to take new post types, such as a Custom Post Type.
 * Add the code below to your PMPro Customizations Plugin - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
 
 function my_pmpro_add_post_type_to_series( $post_types ) {
	$post_types[] = 'my_cpt_name';

	return $post_types;
}
add_filter( 'pmpros_post_types', 'my_pmpro_add_post_type_to_series', 10, 1 );

This recipe is included in the blog post on "How to add Custom Post Types (CPTs) to your dripped membership series content." at Paid Memberships Pro here: https://www.paidmembershipspro.com/add-custom-post-types-and-pages-to-your-dripped-membership-series-content/