related items extended with TABS

I like to add the date to the tab navigation ( for now tabs navigation only show a •)

I added this code : see pict 1
and get this (all item's date are in all nav tabs) see pic 2

Can you help on how to achieve this

Thanks

Thanks

here is the link to the page with related item extended

prix-genevois-litterature.ch/publication...ingria-en-roue-libre

The layout in a modified version of the Slideout layout and I also made some change in the helper

Jean-Philippe

That doesn't help because now the tab a duplicate; the original code already creates a li tag for each K