[xsl] Sort before paging

Hi to everybody,
I'm a novice with xsl.
I'm Using xsl 1.0  with MSXML 

I'm trying to sort a whole document before paging.
I found this template but if I apply how is it is goes on error.
I suppose I must create a function able to sort.


Could you help me ?

Thanks a Lot.

  

<xsl:param name="start" select="1"/>
<xsl:param name="range" select="5"/>
<xsl:template match="/">
<xsl:call-template name="positionfilter">
<xsl:with-param name="sortedlist">
<xsl:for-each
select="/CommandList/CheckRouting/RouterList/Router/GroupList/Group/OutwardL
ist/Outward[position() &gt;=$start and position() &lt; $start + $range]" >
<xsl:sort select="Price/Amount" data-type="number" order="ascending" />
<xsl:copy-of select="."/>
</xsl:for-each>
</xsl:with-param>
</xsl:call-template/>
</xsl:template>


<xsl:template name="positionfilter">
<xsl:param name="sortedlist"/>
<xsl:for-each select="$sortedlist/*[(position() &gt;= $start) and
(position() &lt; $start + $range)]">
'my code
</xsl:for-each>
</xsl:template>