Hi,
 
I'm following the "Modifying a skin" chapter from the Admin Guide to create a new skin (http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Skins). I've created a new page, attached an image to it ("myfile.jpg"), added the XWiki.XWikiSkins class to it and overrode some .vm files. I just don't know how to refer to the attached image ? I've tried several things :
 
#set($logo = $!attachmentpage.getAttachment("myfile.jpg"))
#set($logo = $!doc.getAttachment("myfile.jpg"))
#set($logo = $!prefdoc.getAttachment("myfile.jpg"))
 
Even some
#set($logourl = $prefdoc.getAttachmentURL($logo.filename,"download"))
 
But when I use the <img> tag I have an empty src attribute
<img src="$!logourl" alt="XWiki"/>
<img src="$!logo" alt="XWiki"/>
 
Do you know what I am doing wrong ?
 
Thanks,
Antonio