ldap ACLS with regex

Hi list.

I'm using openldap 2.3.35 to my mail user database, and I have this structure:

uid=user1,ou=People,dc=domain,dc=br

ou=ImpPrefs,uid=user1,ou=People,dc=domain,dc=br

cn=user1,ou=PersonalAddressBook,dc=domain,dc=br

I try to make ACLs to permit just "self" users to write, in his ImpPrefs and PersonalAddressBook, without success.

I did not find much examples of ACLs with regex, I try to do:

access to dn="^.*,uid=([^,]+),(.*),ou=People,dc=domain,dc=br" by dn="uid=$1,$2,ou=People,dc=domain,dc=br" write by * none

but this give me an error.

Somebody can help me?