My requirements are below, using mswinpr2.

1. Select OS installed printer dynamically in batch mode.
2. Specify number of printing COPIES to that printer.
   (I can't use NumCopies instead, because it doesn't command printers.)
3. Don't want to display any dialog of printing document.
   (Because I want to let Windows Server to print automatically.)

But current implementation of mswinpr2 does not allow me to work out those.

If I set 1 or 2 to /QueryUser in my setup.ps, that prevent me from the 
requirement [3] by diaplaying dialogs. And, I set 3, that prevent me 
from requirement [1] because of fixed to default printer.

So I set zero to /QueryUser, this results fulfiling my requirements [1] 
and [3]. In this situation, however, I come to grips with ignored COPIES 
that I set in my setup.ps (always printed only One).

I suggest that if /QueryUser is not set 1 or 2 or 3 to, mswinpr2 driver 
recognize the COPIES value.