How to set default product detail to tabular

-- HikaShop version -- : HikaShop Business 2.6.3,
-- Joomla version -- : 3.5
-- PHP version -- : 5.5.12

Hi,
1. I followed the steps in www.hikashop.com/forum/product-category-...ew-product-page.html
but I got the following error messages:
=======================
Notice: Undefined variable: hide_specs in D:\wamp\www\workspace\purity\templates\purity_iii\html\com_hikashop\product\show_default.php on line 200
========================
Notice: Undefined variable: status_vote in D:\wamp\www\workspace\purity\templates\purity_iii\html\com_hikashop\product\show_default.php on line 203
==========================

I replace show_default from
<div id="hikashop_product_bottom_part" class="hikashop_product_bottom_part">
to the end with show_tabular
<div id="hikashop_product_bottom_part" class="hikashop_product_bottom_part show_tabular">

as for
========================
if(!empty($this->fields)){
$this->setLayout('show_block_custom_main');
echo $this->loadTemplate();
}
========================
The two code are all the same, so I did't change anything.

Is there anything else I should do ?


Thank you so much
Scott