UI displayed through randomness and code

Really appreciate the visual example, I tried to replicate it in the context of my own code (so instead of doing the shuffle I am calling upon my item rarity rolling stuff as I want some things to have different chances of appearing) but it seems I have plugged things in improperly:


What happens is I get a window showing up in the middle box only, I assume it has something to do with me not using the array index from the for each loop but I have no idea how to link that in. Perhaps I have got this all completely muddled, still relatively new to working with Unreal so I have plenty to learn.