Add tabs to product view

-- HikaShop version -- : 2.6.4
-- Joomla version -- : 3.6.4

Hi. I know that the topic is not new (there are 2-5 yr. old outdated topics regarding this matter, but I could not find them useful). Thing is a got a client with Hikashop running on hi's website. I'm not quite experienced with this thing, therefore asking for your help. I have products displayed in tabular view, so far there are 2 tabs: Apraksts (Description) and Specifikacija (Specifications) (Yeah, it's sneaky Latvian). Thing is that I need to add another tab with custom field (Text). Any chance to get help please ? Also I do know that Hikashop is outdated on the website (2.6.4) but the client insists on keeping things as it is.

Thank You for the reply. I've done what's explained in the FAQ. I do have the required Tab now. The problem is that the TAB is empty, even though I've added code required to link it to Custom field. I've added a picture of edited region of show_tabular.php, can you spot what I've done wrong ?

Hello,

If it didn't displayed the value of your product custom field, you should actually check that :
- you correctly used the value of your custom field "column name" through your custom field configuration page.
- you have set a value for your product custom field through your product configuration page.

Oh, misspelled the column name. Thank You for your help.