comparisons between strings have changed since XPath 1

Hello,

I receive the below error message when I try to compile the below XML. I 
am using saxon7 and can trace my error to 
        <xsl:when test="$webs &gt; '3'">
but I am not sure how to fix this. I found some info on the oasis list 
site, but nothing in the mulberry archives.

Any help would be appreciated. Thanks in advance-troy


***********************Error********************************
  Less-than and greater-than comparisons between strings have changed 
since XPath 1.0


***********************XSL********************************

<xsl:if test="string-length(WebExtra) &gt; 1">
        <xsl:variable name="webs">
                <xsl:number value="count(WebExtra)"/>
        </xsl:variable>
        <xsl:choose>
                <xsl:when test="$webs &gt; '3'">
                        <xsl:result-document href="WebExtra.html">
                                <xsl:for-each select="WebExtra">
                                                <p><xsl:copy-of select="
ABSTOC"/></p>
                                </xsl:for-each>
                        </xsl:result-document>
                                        <a href="WebExtra.html">
                                                <img src="
/common/images/doi_bookmark.gif" width="18" height="20" alt="Web Extra" 
class="hspace" border="0" align="absMiddle"/><xsl:value-of select="'Web 
Extras'"/>
                                        </a>
                </xsl:when>
                <xsl:otherwise>
                        <xsl:for-each select="WebExtra">
                                <p> <xsl:copy-of select="ABSTOC"/></p>
                        </xsl:for-each>
                </xsl:otherwise>
        </xsl:choose>
</xsl:if>

************************XML*******************************

<Article>
        <WebExtra>
                <TITLE>My first title here</TITLE>
                                <ABSTOC>Web extra: Part I</ABSTOC>
        </WebExtra>
        <WebExtra>
                <TITLE>My second title here</TITLE>
                                <ABSTOC>Web extra: Part II</ABSTOC>
        </WebExtra>
 
<!--Can have anywhere from 0 to 100 web extras listed-->

</Article>