Zebra ZPL II Commands e.g. ^PW in SIFbA ?

Hello.

we're using a smartform for label printing on a Zebra GK420T printer.

This works fine.

Now we had created a new SIFbA form with same functionality. But the

output is not satisfying, because the Zebra printer does not use the right

print width. So the output is displaced and shifted.

In the smartform we used ZPL II command '^PW304' to set the right

printwidth.

Is there a way to get this command working also for SIFbA by modifying the

azpl203.XDC File ?

And if so, where to put this command ?

Or are there other hints for designing labels with SIFbA on Zebra printers  ?

Thanks.

Sebastian Hockmann