How to enable HTML export in JIRA 7.4 EAP

Hi,

Does anybody know how to export HTML?
I cannot find the property.

A JIRA administrator can disable the HTML export option by setting the property to ‘false’ at > System and clicking Advanced Settings.
https://developer.atlassian.com/jiradev/latest-updates/jira-eap-releases/jira-7-4-eap-release-notes/jira-core-7-4-eap-release-notes

Thanks.