splitting a message into multiple messages

using this xslt from one of the samples i found, it splits a message into multiple messages based on RequestedDate.

How would i change this xslt to include another attribute; like Qty for instance?

<xsl:stylesheet xmlns:xsl=\”http://www.w3.org/1999/XSL/Transform\” xmlns:msxsl=\”urn:schemas-microsoft-com:xslt\” exclude-result-prefixes=\”msxsl\” version=\”1.0\” xmlns:ns0=\”http://BizTalk.Enthusiast.LogicalSplitter.Orders\” xmlns:ns1=\”http://BizTalk.Enthusiast.LogicalSplitter.Order\”>
<xsl:output omit-xml-declaration=\”yes\” version=\”1.0\” method=\”xml\” />
<xsl:key name=\”linekey\” match=\”/ns1:Order/Line\” use=\”@RequestedDate\”/>
<xsl:template match=\”/\”>
<xsl:apply-templates select=\”/ns1:Order\” />
</xsl:template>
<xsl:template match=\”/ns1:Order\”>
<ns0:Orders>
<xsl:for-each select=\”Line\”>
<xsl:variable name=\”group\” select=\”key(‘linekey’, @RequestedDate)\”/>
<xsl:if test=\”generate-id($group[1]) = generate-id()\”>
<ns1:Order>
<Header>
<xsl:attribute name=\”OrderNo\”>
<xsl:value-of select=\”ancestor::*[1]/Header/@OrderNo\” />
</xsl:attribute>
<xsl:attribute name=\”OrderDate\”>
<xsl:value-of select=\”ancestor::*[1]/Header/@OrderDate\” />
</xsl:attribute>
</Header>
<xsl:for-each select=\”$group\”>
<Line>
<xsl:attribute name=\”Item\”>
<xsl:value-of select=\”@Item\” />
</xsl:attribute>
<xsl:attribute name=\”RequestedDate\”>
<xsl:value-of select=\”@RequestedDate\” />
</xsl:attribute>
<xsl:attribute name=\”Qty\”>
<xsl:value-of select=\”@Qty\” />
</xsl:attribute>
<xsl:attribute name=\”ExtendedPrice\”>
<xsl:value-of select=\”@ExtendedPrice\” />
</xsl:attribute>
</Line>
</xsl:for-each>
<Footer NoLines=\”{count($group) }\” TotalQty=\”{sum($group/@Qty)}\” TotalAmount=\”{format-number(sum($group/@ExtendedPrice), ‘####.00’)}\” />
</ns1:Order>
</xsl:if>
</xsl:for-each>
</ns0:Orders>
</xsl:template>
</xsl:stylesheet>

Thanks
Ryan