[xsl] Processing instruction

["J. S. Rawat" <jrawat@xxxxxxxxxxxxxx>]

Hi List,
Would anybody help me to get the required result.

Processor: Saxon.exe

INPUT
<?docpage num="337"?>

REQUIRED OUTPUT
<?page 337?>

XSLT
<xsl:template match="processing-instruction('docpage')">
		<xsl:variable name="num" select="."/>
		<xsl:variable name="num1" select="substring-after($num, '=')"/>
		<xsl:processing-instruction name="page"><xsl:value-of 
select="$num1"/></xsl:processing-instruction>
</xsl:template>

Result of above XSLT is <?page "337"?>

thanks
...JSR