Can't update data in specific row in a basket

Hey there!
I’am trying to simulate adding items to the shopping basket, and it seems everything good, but In the case when I want to add the same item again on the product page, I can’t update corresponding row at the basket repeater.
I have already tried everything I could. Could someone help me?) I would be very appreciated!
UpdateRowInBasket.rp (159.0 KB)