[Exim] Filters in an LDAP database

Virtual users need to store save filters in an LDAP database one filter
per attribute like this:

e.g.
mailFilter: if $h_subject: contains "Free" then save /SPAM endif

The router looks like this:
filtered_delivery:
  driver = redirect
  allow_filter = true
  user = mail
  hide condition = ${if eq {${lookup ldap
{user="cn=admin,dc=localsurface,dc=com" \
        pass=PASS
ldap:///cn=${quote_ldap:$local_part},ou=${quote_ldap:$domain}, \
        dc=localsurface,dc=com?hasMailFilter?sub?}}}{true}{yes}{no}}
  hide data = # Exim Filter ${lookup ldap
{user="cn=admin,dc=localsurface,dc=com" pass=PASS \
        ldap:///cn=${quote_ldap:$local_part},ou=${quote_ldap:$domain},\
        dc=localsurface,dc=com?mailFilter?sub?}}
  file_transport = address_file

The transport looks like this:
address_file:
driver = appendfile
delivery_date_add
envelope_to_add
return_path_add
group = mail
mode = 0660
hide quota = ${lookup ldap {user="cn=admin,dc=localsurface,dc=com"
pass=PASS \

ldap:///cn=${quote_ldap:$local_part},ou=${quote_ldap:$domain},dc=localsurface,\
        dc=com?quota?sub?}}M
  quota_is_inclusive = false
  quota_warn_threshold = 80%
  quota_warn_message = \
        To: $local_part@$domain\n \
        Subject: Maibox Limit\n \
        \n \
        The size of your mailbox has exceed the warning threshold set by
company policy. \
        Please clean out your mailbox.\n
  maildir_format=true
  maildir_tag= ,S=$message_size

Problem:
The router is skipped and nothing is filtered. The router order is correct.

Questions:
First why doesn't it work?
1) Is there a problem with the way I have used data in the router,
specifically # Exim filter ?
2) Is this setup going to have a problem with more than one filter?

Thanks,
Craig



--
Craig Jackson
cjackson@???