<!-- Creating an input item with the path attribute --> 
<arc:set attr="input.path" value="/tmp/foo/bar/newdir"/>
<!-- Calling fileMakeDir and passing in the input item -->
<arc:call op="fileMakeDir" in="input" out="result">
  <!-- Optional: Logging information about the created directory to the application log -->
  <arc:set attr="_log.info" value="A new directory located at [result.file:path], was created at [result.file:cdate]."/>  
</arc:call>