Parsing and formating a string through XSL

<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
	<xsl:template match="/">
		<xsl:call-template name="SplitCSV">
			<xsl:with-param name="CSVData">10,12,12,25,36,14,9,17,34,23</xsl:with-param>
			<!-- This emulates a ZERO based array -->
			<xsl:with-param name="SplitAtElementNumber">6</xsl:with-param>
			<xsl:with-param name="SeparatorCharacter">,</xsl:with-param>
		</xsl:call-template>
	</xsl:template>
	<xsl:template name="SplitCSV">
		<xsl:param name="NumberOfElementsFound">0</xsl:param>
		<xsl:param name="CSVData"/>
		<xsl:param name="SplitAtElementNumber"/>
		<xsl:param name="SeparatorCharacter"/>
		<xsl:variable name="ArrayElement" select="substring-before($CSVData, $SeparatorCharacter)"/>
		<xsl:variable name="RemainingString" select="substring-after($CSVData, $SeparatorCharacter)"/>
		<xsl:value-of select="$ArrayElement"/>
		<xsl:choose>
			<xsl:when test="contains($RemainingString, $SeparatorCharacter)">
				<xsl:value-of select="$SeparatorCharacter"/>
				<xsl:if test="$NumberOfElementsFound=$SplitAtElementNumber">
					<br/>
				</xsl:if>
				<xsl:call-template name="SplitCSV">
					<xsl:with-param name="NumberOfElementsFound" select="$NumberOfElementsFound +1"/>
					<xsl:with-param name="CSVData" select="$RemainingString"/>
					<xsl:with-param name="SplitAtElementNumber" select="$SplitAtElementNumber"/>
					<xsl:with-param name="SeparatorCharacter" select="$SeparatorCharacter"/>
				</xsl:call-template>
			</xsl:when>
			<xsl:otherwise>
				<xsl:value-of select="$SeparatorCharacter"/>
				<xsl:value-of select="$RemainingString"/>
			</xsl:otherwise>
		</xsl:choose>
	</xsl:template>
</xsl:stylesheet>