EM 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
   }  // end function

   function wps_poll_new_page () {
      include ( ABSPATH.'wp-content/plugins/events-manager-ext/admin/emxt-admin-options.php');
   }  // end function

   function emxt_new_page () {
      include ( ABSPATH.'wp-content/plugins/events-manager-ext/admin/emxt-admin-optform.php');
   }  // end function

   function wps_poll_menu () {
      // #1 Works
      add_menu_page('WPS Poll', __('WPS Poll'),'manage_options',basename(__FILE__), 'wps_poll_options_page');

      // #2 Works
      $parent_slug = 'wps-poll.php';
      $page_title  = 'Options';
      $menu_title  = 'Options';
      $capability  = 'manage_options';
      $menu_slug   = 'emxt-admin-options.php';
      $function    = 'wps_poll_new_page';
      add_submenu_page($parent_slug, __($page_title), __($menu_title), $capability, $menu_slug, $function);

      // #3 Works
      $source_file = ABSPATH.'wp-content/plugins/events-manager-ext/events-manager-ext.php';
      $page_title  = 'EMXT Options';
      $menu_title  = 'EMXT Options';
      $function    = 'emxt_new_page';
	//echo "PS=> $parent_slug <br>";
      add_menu_page($page_title, __($menu_title), $capability, basename($source_file), $function);

      // #4 Works Now ==> Problem was the __(var) syntax in the add_submenu_page line
	  //              and "activate_plugins" for capability
      // Test writing a submenu to existing Events manger admin menu
      $parent_slug = 'events-manager';
      $page_title  = 'Ext Options';
      $menu_title  = 'Ext Options';
      $capability  = 'activate_plugins';
      $menu_slug   = 'events-manager-ext';
      $function    = 'emxt_new_page';
      add_submenu_page($parent_slug, __($page_title), __($menu_title), $capability, $menu_slug, $function);
   }  // end function

   add_action('admin_menu','wps_poll_menu');

?>