How to use if condition with <fo:page-number /> in XSLT

[sanjaysanity]

I am trying to use below code but it is not working, please suggest me the answer. thanks

<xsl:variable name="vPageNumber"><fo:page-number /></xsl:variable>
	
	<xsl:if test="$vPageNumber=1">
	<!-- <xsl:if test="$vPageNumber > 1"> -->		
		<fo:static-content flow-name="Header">	
			<fo:block font="{$fontTypeName}">
				<xsl:apply-templates select="HeaderDetails"/>
			</fo:block>	
		</fo:static-content>
	</xsl:if>