Hello to anyone who can help

I am creating a little vb project in excel. It is a simple inventory system.
I have created 3 lists or arrays Listone, listtwo and listthree
I have created 3 listbox controls listonelistbox, listtwolistbox and
listthreelistbox
All three controls have their listfillrange property pointing to the
appopriate list.
I have created add and remove functionality for each of the lists.
My big problem is that I have to use a boolean value every time I remove
something from the lists
The reason for that is that when you remove the list item from the listone
for example the Listonelistbox control updates and Excel or VBA or MS
subsystem goes through each of the overridden controls code.

Could someone let me know if they have gone through something similar? I
would like to know how you got around the problem.

Kind Regards,

Shane