Вот как добавить поля email и поля

$output = $modx->getChunk($chunk_name,array(
       'fullprice' => num2str($pls_order["cost"]),
       'price' => $pls_order["cost"],
       'fullname' => $pls_address["address.receiver"],
       'phone' => $pls_address["address.phone"],
       'street' => $pls_address["address.street"],
       'building' => $pls_address["address.building"],
       'room' => $pls_address["address.room"],
       'city' => $pls_address["address.city"],
    ));
    echo $output;