Enabling realtime search in Solr 4.0

[Avner Levy]

Hi,
I'm trying to enable realtime search in Solr 4.0 (So I can see new documents 
without committing).
I've added:
<realtime visible="0" facet="true">true</realtime>
<updateLog class="solr.FSUpdateLog">
      <str name="dir">${solr.data.dir:}</str>
</updateLog>

But documents aren't seen before commit (or softCommit).
Any help will be appreciated.
Thanks,
Avner