xsl variables and node-sets

[Simon]

Hi,

I would like to use <xsl:variable> and <xsl:choose> to dynamically set a node-set to a variable.
Something like:

<xsl:variable name="MyVar">
<xsl:choose>
<xsl:when test="$MyVar2='0'">
Here I want to select a node set from the source xml document </xsl:when> <xsltherwise> Here I want to select a different node set from the source xml document </xsltherwise> </xsl:choose> </xsl:variable>

Does anyone know how I can do this?

Thanks.

Simon