acl help access to 'own' attributes

["Marc Roos" <M.Roos@f1-outsourcing.eu>]

Can anyone help how I should make the acls that allows users[2] access 
attributes of ldap entries[1] that have themselves listed in the 
attribute value sendmailMTAMapValue

Something like:
Access to children? ou=xxxx,ou=dddd,ou=cccc,dc=bbbb,dc=aaaa,dc=local 
filter=(sendmailMTAMapValue=VAR1) attrs=sendmailMTAKey
  by uid=VAR1,ou=yyyy,ou=dddd,ou=cccc,dc=bbbb,dc=aaaa,dc=local read


[1]
dn: 
sendmailMTAKey=test@example.com,ou=xxxx,ou=dddd,ou=cccc,dc=bbbb,dc=aaaa,
dc=local
objectClass: sendmailMTA
objectClass: sendmailMTAMap
objectClass: sendmailMTAMapObject
objectClass: ritAdditionalInfo
sendmailMTAMapName: virtuser
sendmailMTACluster: mail
sendmailMTAKey: test@example.com
sendmailMTAMapValue: testuser

[2]
uid=testuser,ou=yyyy,ou=dddd,ou=cccc,dc=bbbb,dc=aaaa,dc=local