MIM BUG: AccountName not starts with 0-9a-zA-Z

Just a quick memo to myself. When creating a set where you want to filter on all people that does not have an AccountName, it`s important to be aware of a bug(?) in the filterbuilder.

Creating this set does not work, this will filter out all users with an AccountName EXCEPT users with AccountName starting on “aaAA”, funny huh?

snip_20160414145130

So, you need to add this to get what you`re looking for:
snip_20160414145147

Here`s the XPATH I`m using:

/Person[(ProvisioningAD = True) and (not(starts-with(AccountName, '[0-9a-zA-Z]'))) and (not(starts-with(AccountName, 'aa')))]