Hi I want to read this xml using xslt but for some reason I can't access the tags. this is my code:

<xsl:template match="/">
<!-- start writing XSLT -->
<xsl:variable name="dateString" select="concat('http://www.hebcal.com/converter/','?cfg=xml&amp;gy=2013&amp;gm=8&amp;gd=11&amp;g2h=1')" />
<xsl:variable name="MyFeed" select="umbraco.library:GetXmlDocumentByUrl($dateString)" />
 <!--<xsl:variable name="MyFeed" select="umbraco.library:GetXmlDocumentByUrl('http://newsrss.bbc.co.uk/rss/sportonline_uk_edition/front_page/rss.xml')" />-->
  <span>
    <xsl:value-of select="$MyFeed"/>
  </span>
  <span>
    <xsl:value-of select="$dateString"/>
  </span>
  <ul class="hebrewDate">
    <xsl:for-each select="$MyFeed">
      <li><xsl:value-of select="hebrew" /></li>
    </xsl:for-each>
  </ul>
</xsl:template>
</xsl:stylesheet>

the part of $dateString is working fine and I am getting the right URL, but I want to get the str value inside the hebrew tag.

this is the XML example

<hebcal>
<gregorian year="2013" month="8" day="11"/>
<hebrew year="5773" month="Elul" day="5" str="ה׳ בְּאֱלוּל תשע״ג"/>
</hebcal>