Fredag

Yes, but do you have a solution to the problem?
(By some strange reason I cant open a support ticket…)

Like: Add category to “hidden field” and make that part of the submit so I can access it like %custom_hidden_category% in the notification mail.

This is my try but it fails because I cant get the category:

function update_hidden_category( $post_id ) {
    $whatcategory = $_POST['project_category[]'];  // this is where it fails
    if ( isset( $whatcategory ) ) {
        update_post_meta( $post_id, 'hidden_category', $whatcategory ); 
    }
}
add_action( 'wpuf_add_post_after_insert', 'update_hidden_category' );
add_action( 'wpuf_edit_post_after_update', 'update_hidden_category' );