Multiple LDAP - Remove limitation of 5 characters for LDAP ID

If you're using the Multiple LDAP functionality the LDAP ID (com.aris.umc.ldap.connection.id) is limited to 5 Characters so it's not possible to use the Domain Name as the "identifier" as the ID will be added automatically infront of all userIDs therefore it would be great if the DomainName could be used.