i have issue with my listview

so basically, i want to make an inventory where i store all the body part to customise a skin.

but when i initialise my listview in my interface, every widget in the list is set by default. i followed this tutorial

https://forums.unrealengine.com/community/community-content-tools-and-tutorials/1595437-listview-getting-started-in-bp

and even the part about the changes in 4.23 didnt helped at all

if i do something wrong, can anyone please tell me what is it ?