I have a case, where i need to use some multi node treepickers several times on the same page, so i would like to reuse my xslt with the alias of the different pickers as a macro parameter...

So in theory i want to do this:

<xsl:variable name="thepicker" select="/macro/pickeralias" />

<xsl:for-each select="$currentPage/$thepicker/MultiNodePicker/nodeId">
    <xsl:variable name="node" select="umbraco.library:GetXmlNodeById(.)" />
   <xsl:value-of select="$node/@nodeName" />
</xsl:for-each>

But this doenst work, because you can't inject a variable into a "node-set"...
So how to go about this?