New post status for custom post type

I have a custom post type recipes. I am using a cron script to automatically aggregate news into the database.

It is currently being imported and saved as ‘Pending Review’. Is it possible to create another post status called Aggregated which will list all of the aggregated news to be published?

I tried using the register_post_status function, however this didn’t seem to work:

function custom_post_status(){
    register_post_status( 'aggregated', array(
        'label'                     => _x( 'Aggregated', 'recipes' ),
        'public'                    => false,
        'exclude_from_search'       => true,
        'show_in_admin_all_list'    => true,
        'show_in_admin_status_list' => true,
        'label_count'               => _n_noop( 'Aggregated <span class="count">(%s)</span>', 'Aggregated <span class="count">(%s)</span>' ),
    ) );
}
add_action( 'init', 'custom_post_status' );

Thanks for help with this.

There is a great Step by Step description on how to do that here https://www.jclabs.co.uk/create-custom-post-status-in-wordpress-using-register_post_status/

To add your custom post status to the drop-down menue, just add the following to your themes function script:

add_action('admin_footer-post.php', 'jc_append_post_status_list');
function jc_append_post_status_list(){
 global $post;
 $complete="";
 $label="";
 if($post->post_type == 'recipes'){
      if($post->post_status == 'aggregated'){
           $complete=" selected=\"selected\"";
           $label="<span id=\"post-status-display\"> Aggregated</span>";
      }
      echo '
      <script>
      jQuery(document).ready(function($){
           $("select#post_status").append("<option value=\"aggregated\" '.$complete.'>Aggregated</option>");
           $(".misc-pub-section label").append("'.$label.'");
      });
      </script>
      ';
  }
}

With this you have your custom post status up and running in 5 min, saved me a bunch of time!