ClassHealthDimensions Class properties -key (key: String) -parent (parent: Database List) -title (title: Computed Field) -description (description: Computed Field) Parent attribute specified as Database List XWiki Class Name: WaihonaCode.classHealthDimensions (where WaihonaCode is the space where class is defined) Id Field Name: key Value Field Name: title I would like to create a tree of objects with a few objects having no parent (top-level) The other objects should have one parent referencing a object of the same class But when creating a object the database list remains empty? What am I missing? Gerritjan Koekkoek Vader van Rai Koekkoek (cdls) en voorzitter vereniging CdLS Visit our website<http://www.cdlsworld.org> Facebook<https://www.facebook.com/gerritjan.koekkoek> email&lt;gerritjan(a)cdlsworld.org&gt;