[Zope] Accumulate vars with <dtml-var expr="...">

[Jesper Steen Steffensen]

Hi all.

I have a table with a list of values. To list my values in a dtml method i
write <dtml-var value> inside the appropriate dtml-in tag. In the next
column I have the <dtml-var sequence-number>

This gives me something like:

VALUE SEQNUMBER
13 1
10 2
11 3
10 4
12 5
...

I want to accumulate my values so the result will be:

VALUE SEQNUMBER ACCU
13 1 56
10 2 43
11 3 33
10 4 22
12 5 12
...

Is it possible to make this accumulated value as a
<dtml-var expr="[something like sum of values where seq-num <=seq-num]">

I can't do it in the ZSQL that gets the values, as the value field itself is
a calculated value (can only do it on non-calc'd data).
Any other non-SQL suggestions as to how this is achieved is highly
appreciated!

Thanks from Denmark

Steff
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