[xwiki-users] programming rights in class sheet

Hi, In documents based on a certain class I need to list the attachments of the document. I used the 'List attachments of a page'-snippet from http://platform.xwiki.org/xwiki/bin/view/DevGuide/velocityHqlExamples in the class sheet. This works perfectly fine as long as the document is saved by a user with programming rights. When saved by a normal user it doesn't work, as the priviledged API is used. Is there some workaround or solution for this? Thanks Olaf