$options = array(
            'id' => 'area_text_custom',
            'table' => 'views',
            'field' => 'area_text_custom',
            'relationship' => 'none',
            'group_type' => 'none',
            'admin_label' => '',
            'empty' => TRUE,
            'tokenize' => FALSE,
            'content' => "My HTML Code with <iframe ... >",
            'plugin_id' => 'text_custom',

        );
        $view->setHandler('page_1', 'footer', 'area_text_custom', $options);