Where to find input of PDF-invoice

[CarlosC]

I changed now all my outputs (mail, card f.e.) the 'product_item_price' to  'product_basePriceWithTax'. It is all ok. in the backend view and print, in the emails. But I can`t find a file which does the input for the pdf-invoice to change.
In the invoice is still shown the 'product_item_price'.
Does s.o. know where I can change this for the pdf-invoice?

Best Thanks Carlos

Its allways the same. Now I have found this:
http://forum.virtuemart.net/index.php?topic=101821.0
Seams to be a general problem.

Here ist the next topic:
http://forum.virtuemart.net/index.php?topic=100543.0
But also no help.