$node_field[0]['value'] = $node->field_quantitat[0]['value'] * $node->field_fk_producte[0]['field_preu']['value']; I tried it without luck... any idea? field_ preu is the CCK field where the product price is saved. I think I need to change the node object to point the product object with the product node ID but I don't know how. Node BILL-LINE : $node->field_fk_producte[0][nid']['value']; Should point to node PRODUCT: $node->field_preu[0]['value']; Thank's _____ De: support-bounces@drupal.org [mailto:support-bounces@drupal.org] En nombre de Marolijo - Pol maresma Enviado el: dimarts, 8 / gener / 2008 10:51 Para: support@drupal.org Asunto: [support] Computed field, how to acces Foreignkey's data Hello, from a computed field I wanna to a typical bill-line calculation doing a multiplication price = quantity * fk_product_price How can I do that? I tried wihout luck. $node_field[0]['value'] = $node->field_quantitat[0]['value'] * $node->field_fk_producte[0]['value']......; Thank's! __________ Informacisn de NOD32, revisisn 2767 (20080106) __________ Este mensaje ha sido analizado con NOD32 antivirus system http://www.nod32.com