[xwiki-users] How to use PDF viewer macro

Hi all, I'm using xwiki enterprise 8.4.4. I've installed the PDF view macro <http://extensions.xwiki.org/xwiki/bin/view/Extension/PDF+Viewer+Macro>extension (it appears as "installed" in the extensions manager). How do I now view a PDF using it? See the attached screenshot. When I click on the PDF, the file is downloaded locally. How can I view the PDF in the browser? Oliver