dll question and trying to access the internal collection

[tacoman667]

I have a dll I wrote with a collection of items of type item. I want to create a form in the dll that will popup if someone tries to add a property to item that is unique so that they see the item that conflicts with the one they are adding. how can i set a collection to the collection myApp uses in order to reference the same items?

Example:

dim myItems as Items
dim myItem as Item
 
 
set myItem = myItems.Add("<YourItemHere>")
 
'check if myItems collection already has a "<YourItemHere>"