Hi,

> what i try to do is to have the sum values over 'v2' values
> for distinct B nodes.(distinct means for different key values.)
> i would like to have such an XSL part:
>
> <xsl:for-each select="$ZZZ[generate-id(.)]/???">

See <http://www.jenitennison.com/xslt/grouping/>.

Cheers,

Jarno