[xsl] What is wrong with this?

["Khalid"<k_ali@xxxxxxxxxxxxxxx>]

Hello,
can some one please let me know what is wrong with the code below.

	
<xsl:template match = "distribution-transport-load">
<xsl:call-template name = "get-supply-total">
<xsl:with-param name = "supplyroot" select = "."/>
</xsl:call-template>
		
</xsl:template>
	
	
<xsl:template name = "get-supply-total">
<xsl:param name = "supplyroot"/>
<xsl:choose>
<xsl:when test = "$supplyroot">
<xsl:variable name = "first" select= "$supplyroot[1]"/>
<xsl:variable name = "remaining-total">
<!-- for some reasons it can not gets in this block of code,there fore does
not increment the total
-->					
					<xsl:call-template name = "get-supply-total">
						<xsl:with-param name = "supplyroot" select = "$supplyroot[position()!=1]"/>

</xsl:call-template>
</xsl:variable>
	
<xsl:value-of select = "$first/load-quantity + $remaining-total"/>
</xsl:when>
			<xsl:otherwise>0</xsl:otherwise>
		</xsl:choose>
		
	</xsl:template>

Thanks in advance

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