Added 20 Custom Fields. Only 10 showing in drop down

Just like the title states. I’ve added around 20+ custom fields into my wordpress site and only around 10 are showing in the drop down.

The custom fields are all functioning fine on the site side, but they just aren’t showing up in the drop down.

There’s a limit set inside the function that lists the meta data.

http://core.trac.wordpress.org/browser/tags/3.1/wp-admin/includes/template.php#L512

Run a filter on postmeta_form_limit to increase to your desired value, eg.

add_filter( 'postmeta_form_limit', 'meta_limit_increase' );
function meta_limit_increase( $limit ) {
    return 50;
}

Hope that helps.. 🙂