Hi, I have a class with a text field for holding a reference to a photo. I would like to modify the sheet to add - modify objects of this class. After the modification the sheet should display - a default image if the object attribute 'photo' is empty (like the avatar image for a xwiki user) - a Button to modify the attribute - When the user clicks on a pop-up like the image selector in the user avatar. My issue is that the class was developed in a very early version of XWiki. On XWiki.org I found: Attachment Selector Macro This macro seems pretty close to what I want. But the sheet is still in wiki version 1. How can I use the macro in a sheet that is linked to the class? Gerritjan