Damn, i was working on this but your solution is more elegant then mine. But i'm
a rookie, anyway...
But just to ilustrate how vars should be used,
<xsl:variable name="t1">
<xsl:value-of
select="sum(/Trade/Record[Payment]/Payment)" />
</xsl:variable>
<xsl:variable name="t2">
<xsl:value-of
select="sum(/Trade/Record[not(Payment)]/Balance)" />
</xsl:variable>
<xsl:value-of select="$t1+$t2*0.02"/>
However, i think Jhon want those values grouped by Account.
Quoting David Carlisle <davidc(_at_)nag(_dot_)co(_dot_)uk>:
if I understand your description you want the sum of all Payment
elements plus 2% of the sum of all Balance elemnts that don't have a
sibling Payment so that's just
<xsl:value-of
elect="sum(Record/Payment) + 0.02 * sum(Record[not(Payment)]/Balance)"/>
as you see, no variables are required at all.
David
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