Payment Status

I know you have answered a similar question before, like over 2 years ago where you wrote you had made this possible in a update. I can find this code in the files but need you help to enter the right values. I believe this is the code where I am to enter the payment status to be deleted (processing). That means, the entries that haven’t been payed for yet. $search_critera = array( 'start_date' => date( 'Y-m-d H:i:s', 0 ), 'end_date' => date( 'Y-m-d H:i:s', strtotime( '-' . $settings['deletionDate']['number'] . ' ' . $settings['deletionDate']['unit'] ) ), 'payment_status' => null, ); What am I to enter under payment_status? Thanks for your support!