<xsl:template match="root-element">
		
		<table>
			<xsl:variable name="x">
				<xsl:for-each select="Row[position()>=1]">
					<d><xsl:value-of select="translate(Number,'.','')"/></d>
				</xsl:for-each>
			</xsl:variable>
			
			<td><xsl:value-of select="sum(exslt:node-set($x)/d) "/></td>
			
		</table>
	</xsl:template>
	
</xsl:stylesheet>

I would  like to sum number (without character '.'). It works.
Now I try sum  for one name, I make like this but it doesn't work
<xsl:value-of select="sum([Name = 'Joe']exslt:node-set($x)/d) "/>
How can I filtrate sum with using function translate, or key?

			<xsl:variable name="x">
				<xsl:for-each select="Row[position()>=1][Name = 'Joe']">
					<d><xsl:value-of select="translate(Number,'.','')"/></d>
				</xsl:for-each>
			</xsl:variable>

then you would simply compute the sum as before
  <xsl:value-of select="sum(exslt:node-set($x)/d)"/>

			<xsl:variable name="x">
				<xsl:for-each select="Row[position()>=1]">
					<d>
  <name><xsl:value-of select="Name"/></name>
  <value><xsl:value-of select="translate(Number,'.','')"/></value>
</d>
				</xsl:for-each>
			</xsl:variable>

	Martin Honnen
	http://msmvps.com/blogs/martin_honnen/