item usage?

is there away when u attack an item charge goes down
for example say i attack with an archer that archer will lose 1 bow lets say whenever he attacks

Here's an example trigger that should work

EVENTS:
A unit is attacked (Generic Unit Event)

CONDITIONS:
(Attacking Unit-type) equal to Archer

ACTIONS:
Hero - Order Hero to use (Item carried by Hero of type Bow)

Make the bow have an ability that does nothing. Make a custom scroll of healing ability, and change all the stats to zero and make it have no graphics. That should get you what you want.

i love u man