[xwiki-users] trouble use and install plug in multipage export application

Hello all, I have trouble to use this new extension module when I search on multi-page export page, it always give me back $cplugin.escapeForXML($wptext) I tried the page on xwki.org and it is the same results I have trouble with installation for templates. what should I exactly do in order to add printmulti.vm and pdfmulti.vm to my wiki thank you for your help yann