Embed zip in PDF using XSL-FO

Hi,

I am trying to attach zip file to pdf generaed using xsl-fo, http://xmlgraphics.apache.org/fop/fo.html  -   0.95

part of xsl code -
<fo:declarations>
          <pdf:embedded-file filename="cattachments.zip" src="url(file:///C:/attachments.zip)"    
          description="Attachments"/>
</fo:declarations>

When I open PDF, I donot see any zip file attached with the PDF.

Please suggest. Thanks.

Regards
Neeraj