[xwiki-users] Ratings plugin doesn't work in xwiki 2.6

Hello, I tried to use ratings application but I wasn't able to install Ratings plugin. I followed the instruction: http://extensions.xwiki.org/xwiki/bin/view/Extension/Ratings+Plugin But when I verified correct installation by writing: {{velocity}} $xwiki.ratings.name {{/velocity}} it returns $xwiki.ratings.name instead of ratings. I use xwiki 2.6. Thanks a lot, Zuzana.