Captured items after a player dies?

Use persistent player variable to flag if player had specific item in inventory when it died and then use global triggers to add them back

Uhh I have a similar problem. A player while using my custom item becomes its owner, and the item remembers who owns it so no one else could use it. The problem is, when the owner dies, items he owned should return to their normal state like before. To solve this, I tried storing a player persistent variable to link for owned items, and clear their data if the owner dies, but it seems that an item-type variable actually does not link, but stores a copy instead.