Since the 5.0.1 Xporter for JIRA Activity does not seem to work

When I'm using the following lines in an export I expect them to work but nothing appear.

#{for activityEntries}

   ${ActivityEntries[n].Title}

   ${ActivityEntries[n].Summary}

   ${ActivityEntries[n].Content}

   ${ActivityEntries[n].Author}

   ${ActivityEntries[n].AuthorEmail}

   ${ActivityEntries[n].Published}

   ${ActivityEntries[n].Updated}

   ${ActivityEntries[n].Categories}

#{end}

Reference http://confluence.xpand-addons.com/display/public/XPORTER/Iterations#Iterations-IteratingIssueActivity