"Smart Slider 3", "base" => "smartslider3", "category" => __('Content'), "params" => array( array( 'type' => 'smartslider', 'heading' => 'Slider ID or Alias', 'param_name' => 'slider', 'save_always' => true, 'description' => 'Select a slider to add it to your post or page.', 'admin_label' => true, ) ) )); add_action('admin_footer', 'NextendSmartSlider3VisualComposer::add_admin_icon'); } public static function add_admin_icon() { ?> Select slider'; } } NextendSmartSlider3VisualComposer::init();