[midPoint] Can't generate unique username while importing from resource

[Алексей Ващенков]

Hello. I've configuared resource with next syncronization block.
   <synchronization>
      <objectSynchronization>
         <name>Sync account</name>
         <objectClass xmlns:qn835="http://midpoint.evolveum.com/xml/ns/public/resource/instance-3">qn835:AccountObjectClass</objectClass>
         <kind>account</kind>
         <focusType>UserType</focusType>
         <enabled>true</enabled>
         <reconcile>true</reconcile>
         <opportunistic>false</opportunistic>
         <reaction>
            <name>Add user</name>
            <situation>unmatched</situation>
            <synchronize>true</synchronize>
            <reconcile>false</reconcile>
            <action>
               <name>Add user</name>
               <handlerUri>http://midpoint.evolveum.com/xml/ns/public/model/action-3#addFocus</handlerUri>
               <order>before</order>
               <objectTemplateRef oid="4e7290dd-2fd3-4559-a6bc-aeae11da608c"/>
            </action>
         </reaction>
         <reaction>
            <name>Synchronize</name>
            <situation>linked</situation>
            <synchronize>true</synchronize>
            <reconcile>false</reconcile>
         </reaction>
      </objectSynchronization>
   </synchronization>
And I have next template object
<objectTemplate xmlns="http://midpoint.evolveum.com/xml/ns/public/common/common-3"
                oid="c0c010c0-d34d-b33f-f00d-777222222334"
                version="19">
   <name>Инициализация пользователя</name>
   <description>
        </description>
   <metadata>
      <createTimestamp>2015-05-08T12:08:08.644+03:00</createTimestamp>
      <creatorRef oid="00000000-0000-0000-0000-000000000002" type="UserType"><!-- administrator --></creatorRef>
      <createChannel>http://midpoint.evolveum.com/xml/ns/public/model/channels-3#objectImport</createChannel>
   </metadata>
   <iteration>
      <maxIterations>9999</maxIterations>
   </iteration>
   <mapping>
      <source>
         <name>familyName</name>
         <c:path xmlns:c="http://midpoint.evolveum.com/xml/ns/public/common/common-3">$focus/familyName</c:path>
      </source>
      <source>
         <name>givenName</name>
         <c:path xmlns:c="http://midpoint.evolveum.com/xml/ns/public/common/common-3">$user/givenName</c:path>
      </source>
      <source>
         <name>additionalName</name>
         <c:path xmlns:c="http://midpoint.evolveum.com/xml/ns/public/common/common-3">$user/additionalName</c:path>
      </source>
      <expression>
         <script>
            <code>import com.evolveum.midpoint.common.policy.StringPolicyUtils;
                StringPolicyUtils.transliterateFullName(givenName, familyName, additionalName) +iteration
            </code>
         </script>
      </expression>
      <target>
         <c:path xmlns:c="http://midpoint.evolveum.com/xml/ns/public/common/common-3">$user/name</c:path>
      </target>
   </mapping>
</objectTemplate>
If I use order set to before, then I have givenName, familyName, additionalName all are null. If I set order to after, then I have warning Correlation rule for resource 'resource:f01e18f2-3d14-4c25-bea0-268c209f1091(???????????? ? HR)' doesn't contain query, returning empty list of users.

How can I properly configure generating username?