如何在xslt中从多个字段中查找最新日期并设置其格式

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" indent="yes"/>

  <xsl:template match="/">
    <xsl:variable name="dates">
      <date>2022-01-01</date>
      <date>2022-02-01</date>
      <date>2022-03-01</date>
    </xsl:variable>

    <xsl:variable name="latestDate" select="$dates/date[not($dates/date > .)]"/>

    <xsl:value-of select="format-date($latestDate, '[D01]-[M01]-[Y0001]')"/>
  </xsl:template>
</xsl:stylesheet>