option to change cite-format

Is there a way to change the cite-format, when using the 'Extract Annotations' feature?

I have found the option to do some adjustments in extensions.zotfile.pdfExtraction.formatAnnotationNote, but the %(cite) variable does not seem to be configurable?

Right now it comes out as "%(author) %(year):%(page)" and I would like it to be "%(author), %(year), p. %(page)" instead (APA-style) (exampled with fictitious variables, but I hope it makes sense).

I.e. "Clegg et al, 2005, p. 150" instead of "Clegg et al 2005:150".

But I seem to have hit a wall, so any pointers or hints, would be greatly appreciated.