Getting Outlook contacts of a particular category

[Emir]

Hello
My application works well in synchroizing contacts forth and back with
outlook by using functions similar to GetItemFromName, GetItemFromNames,
etc. as given in Microsofts Code Librarian. Unfortunately selectively
accessing categories with
strCriteria = "[Categories] = Test"
Set objFoundItems = fldContacts.Items.Restrict(strCriteria)
does not work.

Does anyone have a hint to give?

Thanks in advance
Walter