adding extra columns to product lists in back-end

-- HikaShop version -- : 3.0.1
-- Joomla version -- : 3.6.5
-- PHP version -- : 5.6.36

Hello,

I want add some extra rows: ("Tax" and "Price inlcuding tax") in the back-end of my product-list (see also the screenshot)

An article about this has been wrote about 4 - 6 years ago:
- www.hikashop.com/forum/product-category-...-columns.html#181291
- www.hikashop.com/forum/2-general-talk-ab...axes-in-backend.html
Also the suggested topics in that article does not seem to work, probably through the use of old hikashop version.

which code do I need to add for displaying these extra information?
How do I get acces to the pricing of that product?

Thanks..

kindly regards,

p.s
- file: backend view --> product / listing.php

Thanks for fast respond Nicolas,

I've tried your solution. On someway te result for tax keeps €0,00. (see also screenshot).

// prints €0,00
echo $this->currencyHelper->format($row->prices[0]->price_value_with_tax - $row->prices[0]->price_value, $row->prices[0]->price_currency_id);															

// prints also 0 or €0,00
$price_val = $this->currencyHelper->displayPrices(@$row->prices,'price_value');
$price_with_tax = $this->currencyHelper->displayPrices(@$row->prices, 'price_value_with_tax');
$price_cur_id = $this->currencyHelper->displayPrices(@$row->prices,'price_currency_id');								
echo $price_with_tax - $price_val; // result 0
echo $this->currencyHelper->format($price_with_tax-$price_val, $price_cur_id); // result €0,00

Thanks Nicolas,

I am not sure what "reset" does, but it helped it worked for me!.

greetings.