Inventory BP: Create UI Inventory Item Widget[Return Value] -> Set[BP-Target] sos.

Hello, im having a little issue, is there any way to attach them together ? (Create UI Inventory Item Widget[Return Value] -> Set[BP-Target])
Im new in UE4 and i was trying 2 tutorials from different peoples… one on interface 2nd on inventory for rpg game.
because of that im confused and i dont know what to do now xD

This BP is for opening and closing inventory, with changing colour on using item… sorry for bad eng.