If a unit buys or picks up say, scrap metal if the unit already has scrap metal how do you make it so it adds the scrap metal picked up to the amount already owned, and if you have an item “Blacksmiths Hammer” and try to pick up or buy another and it comes with 5 or theres one with a certain amount left on the ground how do you add the amount you have to what you try to pick up or buy even if you have a full inventory, same with the scrap metal, ill play around and see if i can figure it out. I got something but it removes both the items instead of adding it to one. thx