Default invoice filename

[Adam]

On 19/09/2014 11:35, Geert Janssens wrote:
> On Thursday 18 September 2014 23:02:30 Adam wrote:
>> Hi All,
>>
>> Is it possible to alter the default invoice filename when I export it
>> as PDF?
[snip]
>> "This setting chooses the file name for PDF export. This is a sprintf(3)
>> string with three arguments: "%1$s" is the report name such as
>> "Invoice". "%2$s" is the number of the report, which for an invoice
>> report is the invoice number. "%3$s" is the date of the report,
>> formatted according to the filename-date-format setting.
Is filename-date-format another registry key within pdf-export? If so, 
what's the format? I'd like to change it from the US style 
month-day-year to year-month-day.

Thanks,
Adam