[GNC] Help with using formula in NUM field of Scheduled Transactions

[David H]

Check the wiki at https://wiki.gnucash.org/wiki/Scheduled_Transactions  ???

Variables and Formulas were introduced to serve the *mortgage/loan druid* in
2002. Variables and Formulas work only in cells like Deposit and Withdrawal
(or Debit and Credit if you have formal account names turned on) that
require something that evaluates to a number.

   1. Any text string [not followed by parens] entered in the template
   transaction will be recognized as a *variable*, and you will be prompted
   to provide a value when the scheduled transaction is created.
   2. Any text string *followed by parens*, optionally with arguments, will
   have the string "gnc:" prepended to it and *evaluated in the scheme
   environment*.*Arguments* are separated with :. See fin.scm
   <https://github.com/Gnucash/gnucash/blob/stable/bindings/guile/fin.scm> for
   examples of providing functions.
   3. There is a *magic variable* '*i'*, which stands for the *current
   instance-count of the scheduled transaction*. 1 for the first, 2 for the
   second, &c. It might be 0-based.


   - I'd like to have a variable which decrements each month, in order to
   automatically calculate sum-of-digits depreciation.

In any case, if you know the starting point, "(42 - i)" should work.
Cheers David H.

On Fri, 11 Apr 2025 at 09:43, Adrian Jolly via gnucash-user <
gnucash-user at gnucash.org> wrote:

> I require to schedule a weekly transaction, where the Num field increments
> by 1 for each transaction
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> My template has " i + 1 " (without the quotes), in the Num field. But all I
> get is " i + 1 " (without the quotes) in each and every transaction.  What
> am I doing wrong?
>
>
>
>
>
>
>
> Adrian
>
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>
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