Map value to Widget

Hello!
II’ve been struggling with this problem for three days, trying to implement this inventory into a widget. Everything works as I need it to, but only with Print String. I need what is displayed in the Print String to be shown as text in the widget. I can’t figure out how to make new items appear below each other in the vertical box. It keeps overwriting the same row. I also can’t manage to correctly link it as a child to the vertical box. Thank you very much.

First Person Blueprint

ItemBP