Any dynamic variables available in stats output?

[troffasky]

Scenario: I need to report each month the time spent on six [although this number will only increase] different CustomerIDs, using TicketAccountedTime.

Here's the stat I'm using, per CustomerID:

sipcap2.png

It doesn't seem to be possible to report on multiple CustomerIDs simultaneously, thus necessitating six nearly identical reports.

Another possibility is, I can set the CustomerID not to be a fixed value and put it in at generation time, but this comes with the drawbacks that:
a) the CustomerID doesn't appear in the report, so I have a pile of PDFs each with the data in, but no description of what it's about
b) they can't be scheduled as you can't specify a parameter to otrs.GenerateStats.pl, pretty much ruling this one out.

So, can I somehow get the CustomerID into the report? Or report on multiple CustomerIDs in one report? Or any other bright ideas anybody can think of?