http://bugs.winehq.org/show_bug.cgi?id=16143
--- Comment #2 from Tahtu winehq.5.tahtu@spamgourmet.com 2008-11-21 03:12:45 --- Under Delphi I'm using this code:
IXMLNode.Attributes['test'] := Null;
Delphi realize this as:
IXMLNode.SetAttribute('test', Null);