How to show $tax_rate into order-detail and order-list

[lianix]

Hi.

I've a question for presta 1.6.1.4

 

 

I need show taxrate (4%, 10%, 22%) for each product showed in the order detail and if possible in the product-list.

 

I've tried in the product-list.tpl to add:

{addJsDef taxRate=$tax_rate|floatval} in bottom of file and add {$tax_rate|floatval} where i want display the taxrate, but it show 0.

 

 

Who can explain how to do?

Thank you!