Header(array('fields' => 'Fields', 'settings' => 'Settings', 'help' => 'Help'), 'authorize_net_config_{n}'); ?> tabStart('fields'); ?> input('action_authorize_net_{n}_x_card_num_config', array('type' => 'text', 'label' => "Card's number field", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_x_exp_date_m_config', array('type' => 'text', 'label' => "Card's expiry month field", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_x_exp_date_y_config', array('type' => 'text', 'label' => "Card's expiry year field", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_x_description_config', array('type' => 'text', 'label' => "Transaction description field", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_x_amount_config', array('type' => 'text', 'label' => "Customer's amount field", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_x_first_name_config', array('type' => 'text', 'label' => "Customer's first name field", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_x_last_name_config', array('type' => 'text', 'label' => "Customer's last name field", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_x_address_config', array('type' => 'text', 'label' => "Customer's address field", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_x_city_config', array('type' => 'text', 'label' => "Customer's city field", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_x_state_config', array('type' => 'text', 'label' => "Customer's state field", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_x_zip_config', array('type' => 'text', 'label' => "Customer's zip code field", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_x_country_config', array('type' => 'text', 'label' => "Customer's country field", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_x_phone_config', array('type' => 'text', 'label' => "Customer's phone field", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_x_email_config', array('type' => 'text', 'label' => "Customer's email field", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_x_invoice_num_config', array('type' => 'text', 'label' => 'Invoice # field', 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_content1_config', array('type' => 'textarea', 'label' => 'Extra fields', 'rows' => 5, 'cols' => 50)); ?> tabEnd(); ?> tabStart('settings'); ?> input('action_authorize_net_{n}_loginid_config', array('type' => 'text', 'label' => "API Login ID", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_transkey_config', array('type' => 'text', 'label' => "Transaction Key", 'class' => 'medium_input', 'value' => '')); ?> input('action_authorize_net_{n}_debugging_config', array('type' => 'select', 'label' => 'Debugging', 'options' => array(0 => 'No', 1 => 'Yes'))); ?> input('action_authorize_net_{n}_testing_config', array('type' => 'select', 'label' => 'Testing', 'options' => array(0 => 'No', 1 => 'Yes'))); ?> input('action_authorize_net_{n}_auto_add_error_config', array('type' => 'select', 'label' => 'Auto Set Error', 'options' => array(0 => 'No', 1 => 'Yes'))); ?> input('action_authorize_net_{n}_error_retires_config', array('type' => 'text', 'label' => "Error Retires", 'class' => 'small_input', 'value' => '')); ?> tabEnd(); ?> tabStart('help'); ?>

Map your form fields names to the fields required by Authorize.net, no spaces should be in the fields name.
You may map extra fields through the "Extra fields" box, use multi line format, each line should be in this form: authorize.net_field_name=form_field_name
Enter your authorize.net account settings.
If you enable the debugging then you will see the Authorize.net response in the same event page.
Map your form fields names to the fields required by Authorize.net, no spaces should be in the fields name.
Some response data will be stored after the response is received under the $form->data['_PLUGINS_']['authorize_net'].
You can add a "Custom code" action after this one and use this code to check/user the response data stored : print_r2($form->data['_PLUGINS_']['authorize_net']);

tabEnd(); ?>