Post: #2

With drop you mean loot or drop on ground?

If you mean drop you'll have to create one event for all npcs with this code:

ON=@DeathCorpse
if (<findid.youritemid>)
serv.b=your_broadcast
endif

If you want the broadcast if the item is dropped on ground you need to add this trigger to that item:
ON=@DropOn_Ground
serv.b=your_broadcast