Hi,

> I have the Var calles $This.
> 
> For debuging reasons I want to output the variable into a 
> output XML file. 
> The XML file is not the same as the general sytelsheets 
> output. In the end I
> want to have two files. The general output, and the XML file including
> "$This".
> 
> I was thinking about using something similiar to this:
>  <xsl:copy-of select="document('This.xml')/$This)"/>

"The document function allows access to XML documents other than the main source document." <http://www.w3.org/TR/xslt#document>: access in this case mean reading, not writing. You can either use XSLT 2.0, use an extension to create multiple result trees, e.g. <http://exslt.org/exsl/elements/document/index.html>, or you could e.g. redirect xsl:message stream into a file.

Cheers,

Jarno