Showing heatmap button only to admins

A previous poster had this issue. Thought I’d share a solution

function remove_heatmap_for_wl( $wp_admin_bar ){
 if( class_exists( 'heatmapWP' ) && is_user_logged_in() && is_admin_bar_showing() ){
  global $current_user;
  get_currentuserinfo();
   if( 9 > $current_user->user_level ){
    $wp_admin_bar->remove_node( 'heatmap-for-wp-bar' );
   }
  }
}
 add_action( 'admin_bar_menu', 'remove_heatmap_for_wl', 1001 );