Ok I see
I change my slot to AWeapon * weaponSlot
and my equip() will be a generic function for equiping Weapon or Armor (item directly see in world), I need to spawn it before assigning it
but this will work with class derived in BP, by example my test weapon W_test is a BP extended from AWeapon, W_test can assign into the pointer weaponSlot after spawn ? with cast ?
for the Bag slot, it’s a “garbage” inventory, just SubclassOf can be use here and if the player equip from the bag I can spawn the correct object using the subclass.