I want to hide page menu from the admin panel for a specific user type. I tried it with the below codes in

functions.php

function hide_menu_items() {

     global $menu;
     global $current_user;
     get_currentuserinfo();

     if( $current_user->user_login == 'username' ):
         remove_menu_page( 'admin.php?page=megamenu' );
         remove_menu_page( 'admin.php?page=mycustompage' );

     endif;
  }
  add_action( 'admin_menu', 'hide_menu_items' );

It’s not working but it only hides post_types