I am trying to create a module in Drupal 6.22, using the following code.

```php
function example_video_perm() {
  return array("video access");
}

function example_video_menu() {
  $items = array();

  $items['video/%nid'] = array(
    'title' => '',
    'page callback' => 'video_load',
    'access arguments' => array('video access'),
    'type' => MENU_CALLBACK,
  );

  return $items;
}

function video_load($nid) {
  print_r($nid); 
}

```

Whenever I am trying to access <http://example.com/video/nid>, I get a 404 error. Please help.