Problem deleting ACLs

[dimon at intellinetinc.com]

Quoting Connie Starr Fensky <cfensky at mtsu.edu>:

> I don't know why it would say extra arguments--I thought you had to tell it
> which acl's to delete at the end of the command, like this:
> dam user/dmitry mailusers all
> c*
> 

I don't know too. It looks very strange to me. Of course I tried with acl at 
the end of statement, but effect is the same:

localhost> dam user/dmitry mailusers123 all
deleteaclmailbox: mailusers123: Unexpected extra arguments to Deleteacl
all: Unexpected extra arguments to Deleteacl
localhost> dam user/dmitry mailusers123 lrswipcda
deleteaclmailbox: mailusers123: Unexpected extra arguments to Deleteacl
lrswipcda: Unexpected extra arguments to Deleteacl

When I see the help, it doesn't say anything about acls at all:
localhost> dam user/dmitry
usage: deleteaclmailbox mailbox id [id ...]

So I'm wondering why it doesn't accept id's?

BTW, I'm using version Cyrus IMAP 2.2a from FreeBSD ports collection, Perl v. 
5.8.0

May be it's something wrong with Perl or modules?