Ideas on how to hack Dungeon Defenders REDUX?

Hi guys.
With the new update to the very old gem, ("Dungeon Defenders REDUX" as its called now) - there are items like Void Crystal's and Divine Crystals. These items are used to buy certain gear. These items doesnt stack, so i cant modify stacksize with cheat engine. But ive been able to find an adress for those items, but havent been able to 'freeze' the item or copied them. When I sell it it disapear. Is there a way for me to clone an item (duplicate it several times) or am i able to modify 1 item to be like 100 items? Any advice would be appreciated.