Coldfusion 8,cfdocument, cfpdf, watermark, blank page output?

Question

I'm using cfdocument. No matter whether I use PDF or
Flashpaper as the type, if I specify the "name" attribute it
results in an outputted page that is blank. If I remove the name
attribute, it renders the pdf or flashpaper page.
Why is this happening? I want to use it to create a PDF
onscreen and then add a watermark to the just generated PDF, but
the cfpdf action="addWatermark" requires you to specify the name of
the pdf to add the watermark to. Since I cannot set the name, I
can't add the watermark.
What can I do? Thanks.

Answer 1

....if I specify the "name" attribute it results in an outputted
page that is blank. If I remove the name attribute, it renders the
pdf or flashpaper page.
Why is this happening?
It is so by design in the cfdocument as well as in the cfpdf
tag. If you specify a name attribute, Coldfusion wont display the
PDF or Flashpaper output, but will hold it in memory as a variable.
To do the watermark with
cfpdf action="addWatermark" you must specify the source
attribute. That implies that, in the cfdocument that goes before,
you should save the PDF as a file.
Here is an example. Coldfusion will create
myTestDoc.pdf and store it in the current directory. For the
watermark, I wish to use an image stored in the same directory.
Coldfusion will then store the watermarked result as the file
myWatermarkedDoc.pdf. The browser will only display the text
PDF doc watermarked and saved as file.
edited: read "watermark" in place of "bookmark"