need help with item triggers

[Illidari]

How would i trigger in GUI a simple trigger to make sure a hero can only have one of some type of item. Like for example a hero has a "sword" which is a type of weapon but decides to pick up an "Axe" Which is also a type of weapon.

 

[Berb]

Probably something like this:

• Untitled Trigger 001
  • Events
    • Unit - A unit Acquires an item
  • Conditions
    • Or - Any (Conditions) are true
      • Conditions
        • (Item-type of (Item being manipulated)) Equal to Wirt's Other Leg
        • (Item-type of (Item being manipulated)) Equal to Wirt's Leg
  • Actions
    • For each (Integer A) from 1 to (Size of inventory for (Triggering unit)), do (Actions)
      • Loop - Actions
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • Or - Any (Conditions) are true
              • Conditions
                • (Item-type of (Item carried by (Triggering unit) in slot (Integer A))) Equal to Wirt's Other Leg
                • (Item-type of (Item carried by (Triggering unit) in slot (Integer A))) Equal to Wirt's Leg
          • Then - Actions
            • Hero - Drop (Item being manipulated) from (Triggering unit)
          • Else - Actions

This is just an example, using the two "Wirt's Leg" items.

 

[djebel]

I think you should use an 'Equipment System'. I use Flood's 'Equipment System' for my map, and it worked perfectly.
LINK :
http://www.hiveworkshop.com/forums/spells-569/equipment-system-version-2-2a-123336/?prev=search%3Dequipment%2520system%26d%3Dlist%26r%3D20