[xep-support] Getting a page number into a basic-link

We have an errata reporting system that lets users click a link on apage in a book to report a problem on that page. Our old system usedto embed the page's number into the hyperlink, so that the erratasystem would prefill it. The link would look like
   http://books.pragprog.com/titles/jvrails/errata/add?pdf_page=30

So, in the static-content for the page footer, I have
       <fo:basic-link> <xsl:attribute name="external-destination"> <xsl:text>url(http://pragprog.com/titles/</xsl:text> <xsl:value-of select="$book-code"/> <xsl:text>/errata/add?pdf_page=</xsl:text> <fo:page-number/> <xsl:text>)</xsl:text> </xsl:attribute> Report erratum on page <fo:page-number/> </fo:basic-link>
That doesn't seem to work—I'm getting nothing for the page numberinside the link (but it is displaying correctly in the static text).
Now, I understand why I can't use <fo:page-number/> in a variable, butI'm not sure I see why this particular use shouldn't work: isn't thesubstitution into the link going to use the same mechanism as thesubstitution into the text?
And, if not—is there any way to do what I'd like to do?

Thanks

Dave
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Received on Fri Jan 14 19:57:23 2011