I see your issue now. Was early morning (late for me).
Create a struct entry for weapons as Weapon_BP object reference [array]. Do this for each type of item that will be physically spawned on the character.
For the other items …say consumables you’ll still need an array, but of type that suits your project.
I’ve just about finished building out a fresh/rough demo of my projects inv sys. I’ll post a vid and bp screens in a bit.