I could  able to solve it
<xsl:variable name="purchaseTotalLength">
<xsl:for-each
select="exslt:node-set($purchaseTotalcount)/*">
	<sub>
		<xsl:value-of select="@val"/>
	</sub>
</xsl:for-each>
</xsl:variable>
<xsl:value-of
select="sum(exslt:node-set($purchaseTotalLength)/sub)"/>

Still I am not sure why xsl-copy is not working?

thanks
-Ranjan
--- "Ranjan K. Baisak" <ranjanbaisak@xxxxxxxxx> wrote:

> I could  able to solve it
> <xsl:variable name="purchaseTotalLength">
> <xsl:for-each
> select="exslt:node-set($purchaseTotalcount)/*">
> 	<sub>
> 		<xsl:copy-of select="@val"/>
> 	</sub>
> </xsl:for-each>
> </xsl:variable>
> <xsl:value-of
>
select="sum(exslt:node-set($purchaseTotalLength)/sub)"/>
> 
> Still I am not sure why xsl-copy is not working?
> 
> thanks
> -Ranjan
> 
> 
> 
> 		
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