Drupal: Pass ids as arguments to page VBO action

<?php/** * Implementation of hook_action_info * @return multitype:multitype:string boolean The */function mymodule_action_info() {    return array(            'mymodule_passid_to_other_page' => array( // declare the function name to be used. Replace the name with your function name            'type' => 'entity', // can be node,comment etc            'label' => t('Pass ids as arguments to page (Custom)'), // the name of the operation which is displayed to the user.            'aggregate' => TRUE,            'configurable' => FALSE,            'hooks' => array(),            'triggers' => array('any'),    ),    );}/** * Implementation of a Drupal action. * Passes selected ids as arguments to a view. */function mymodule_passid_to_other_page($entities, $context = array()) {    $base_url = $context['settings']['url'];    $arguments = implode(',', array_keys($entities));    // Add a trailing slash if missing.    if (substr($base_url, -1, 1) != '/') {        $base_url .= '/';    }    drupal_goto($base_url . $arguments);}/** * mymodule_passid_to_other_page_views_bulk_operations_form * @param unknown $options * @return multitype:string The Ambigous <string, unknown> */function mymodule_passid_to_other_page_views_bulk_operations_form($options) {    $form['url'] = array(            '#title' => t('URL'),            '#type' => 'textfield',            '#description' => t('Enter a URL that the user will be sent to. A comma-separated list of selected ids will be appended.'),            '#default_value' => isset($options['url']) ? $options['url'] : '',            '#field_prefix' => url(NULL, array('absolute' => TRUE)) . (variable_get('clean_url', 0) ? '' : '?q='),    );    return $form;}?>