How do I make it so if a guy picks up like, say, a healing potoin, and then picks up another that there will be 1 icon in his inventory that will say "2" on the bottom of the icon
That would have to be done with triggers and setting the chargrs on an time that has charge capabilities. But it would have to be an item that stays in your inventory.
i.e. Hero pick up item Item type is equal to ??? Remove last picked up/triuggering item from hero's inventroy set # of charges of (whatever chargable item that stays in inventroy) to ???