Submenu Test

<?php
   /***************************************************************************/
   /*  Plugin Name: WPS Poll      					      */
   /*  	       URI: ../wp-content/plugins/wps-poll         		      */
   /*  Description: This plugin is a test plugin for learning purpose.        */
   /*      Version: 0.1        Author: Nyle Davis                             */
   /*	Author URI: http://URI_Of_The_Plugin_Author                           */
   /*      License: GPL2  - most WordPress plugins are released under GPL2    */
   /***************************************************************************/

   function wps_poll_options_page () {
      ?>
      <div class=”wrap”>
      <h2>WPS Poll Admin</h2>
      <p>Here comes the options page content</p>
      </div>
      <?php
   }

   function wps_poll_menu () {
      // Works
      add_menu_page('WPS Poll', __('WPS Poll'),'manage_options',basename(__FILE__), 'wps_poll_options_page');
      // Doesn't Work
      add_submenu_page('WPS Poll', __('WPS Poll'),'manage_options',basename(__FILE__), 'wps_poll_options_page');
      // Doesn't Work
      add_submenu_page('events-manager', __('WPS Poll'),'manage_options',basename(__FILE__), 'wps_poll_options_page');
   }

   add_action('admin_menu','wps_poll_menu');

?>