[xwiki-users] unable to delete attachment

Hi I'm trying to delete an attachment using Groovy script. I've used com.xpn.xwiki.doc.XWikiDocument.deleteAttachment(att, context); but get error indicating a type mismatch. According to http://www.docjar.com/docs/api/com/xpn/xwiki/doc/XWikiDocument.html <http://www.docjar.com/docs/api/com/xpn/xwiki/doc/XWikiDocument.html> arguments should be XWikiAttachment <http://www.docjar.com/docs/api/com/xpn/xwiki/doc/XWikiAttachment.html> , com.xpn.xwiki.XWikiContext <http://www.docjar.com/docs/api/com/xpn/xwiki/XWikiContext.html> which I think I'm using (see error msg below). Can anyone point my error? Is this v1.8 method? Wrapped Exception: No signature of method com.xpn.xwiki.doc.XWikiDocument.deleteAttachment() is applicable for argument types: (com.xpn.xwiki.doc.XWikiAttachment, com.xpn.xwiki.XWikiContext) values: {com.xpn.xwiki.doc.XWikiAttachment@3c550b, ["msg":com.xpn.xwiki.web.XWikiMessageTool@401ab1, "stats_newcookie":false, "stats_cookie":javax.servlet.http.Cookie@986d0e, "tdoc":Patterns.UseMyStuff, "org.xwiki.component.manager.ComponentManager":org.xwiki.plexus.manager. PlexusComponentManager@457b62, "ajax":false, "locale":en, "doc":Patterns.UseMyStuff, "mainxwiki":"xwiki", "vcontext":org.apache.velocity.VelocityContext@11fe9d5]} Ajdin -------------------------------------------------------- NOTICE This message and any files transmitted with it is intended for the addressee only and may contain information that is confidential or privileged. Unauthorised use is strictly prohibited. If you are not the addressee, you should not read, copy, disclose or otherwise use this message, except for the purpose of delivery to the addressee. Any views or opinions expressed within this e-mail are those of the author and do not necessarily represent those of Coventry University.