Regarding JIRA issue XE-143 : http://jira.xwiki.org/jira/browse/XE-143 Which skin file would you need to edit in order to add buttons for removing an object property in the class editor ? The following Velocity command works : $xwiki.getClass("doctreeChildClass").getXWikiClass().removeField("fullNameOld"); But I dont know how to get the class defined in a document. I know how to get the class of an object attached to a document, but not the class defined in a document. If I get an answer, I can add this information to the Velocity API guide in xwiki.org Maybe it s also possible to add "remove" buttons for each existing property in the class editor. Let me know your thoughts, Thanks ! -- Jean-Vivien MAURICE Elève Ingénieur Informatique et Gestion, Polytech'Montpellier (ISIM) E-mail : jean.vivien.maurice(a)gmail.com Tél. : 0046 7 62 33 20 46 Skype : jean.vivien