Obviously doing something wrong with Ctools (latest version enabled in D6) Here is the form field that should disappear when the option selected in the edit-cc-type field is Other. The Ctools parameters are the last two. $form['cc_cvv'] = array( '#type' => 'textfield', '#title' => t('CVV'), '#default_value' => $_SESSION['clear_cc'] ? '' : $default_cvv, '#attributes' => array('autocomplete' => 'off'), '#size' => variable_get('uc_credit_amex', TRUE) ? 4 : 3, '#maxlength' => variable_get('uc_credit_amex', TRUE) ? 4 : 3, '#process' => array('CTools_process_dependency'), '#dependency' => array('edit-cc-type'=> array('Visa','Mastercard','Discover','American Express')), ); Changing the selected option has no affect on this field. Jeff