JavaHelp print shows null1/1 in the page header

Question

I just noticed that when I print a page of the JavaHelp system, it puts the word null next to the page number in the header of the printed output. For example: null 1/2. Does anyone know if that is a bug in JavaHelp, or if maybe there is something I need to configure somewhere in JavaHelp?
Thanks for your help

Answer 1

Thanks for the reply. That is really an interesting solution with many new things, which I dont know. I have mixed both the solutions and adjusted them a bit.That helped reducing the blank pages. But the issue with both solutions is page header(orderid, quotepostas,function date, page number fields) is displaying only for new Function Date. For remaining pages the page header is not getting displayed. Actually the function information, can span across multiple pages, caz it has many other children. Ex: Function with date1 has information that spans across 3 pages, only in the first page the page header is getting displayed, in 2nd and 3rd pages only the function information is displayed, page header is not getting displayed. Actually I am using it this way..
<?for-each:Order?>
<?xdoxslt:set_variable($_XDOCTX,'z',count(xdoxslt:distinct_values(Function/Date)))?>
<?for-each-group:Function;Date?>
<?OrderId?>
Page num : <?position()?>
<?QuotepostAs?>
<?Date?>
<?for-each:current-group()?>
<?Date?>
<?Id?>
<?end for-each?>
<xsl:if xdofo:ctx="inblock" test="position()<xdoxslt:get_variable($_XDOCTX,'z')"><xsl:attribute name="break-before">page</xsl:attribute></xsl:if>
<?end for-each-group?>
<xsl:if xdofo:ctx="inblock" test="position()<count(//Order)"> <xsl:attribute name="break-before">page</xsl:attribute></xsl:if>
<?end for-each?>