how-to change &#*****; to &#****;

Hi,

I hope you can help me once again.

I have an ESQL query to our MSSQL database via the JDBC driver, where I
query chinese Unicode characters.
Unfortunately I didn't find an solution to get the unicode characters out of
the database,
so I try a different solution in applying an xsl-transformation and replace
the & with &.
However it doesn't work.

my xml
<categories xmlns:xsp="http://apache.org/xsp";
xmlns:xspdoc="http://apache.org/cocoon/XSPDoc/v1";
        xmlns:esql="http://apache.org/cocoon/SQL/v2";
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
        <category>
                
<FaaLocTextCH>&amp;#32173;&amp;#20063;&amp;#32013;</FaaLocTextCH>
        </category>
        <category>
                
<FaaLocTextCH>&amp;#27861;&amp;#34349;&amp;#20811;&amp;</FaaLocTextCH>
        </category>
        <category>
                <FaaLocTextCH>&amp;#32016;&amp;#32004; </FaaLocTextCH>
        </category>
        <category>
                <FaaLocTextCH>&amp;#39321;&amp;#28207;</FaaLocTextCH>
        </category>
        <category>
                
<FaaLocTextCH>&amp;#38463;&amp;#22982;&amp;#26031;&amp;</FaaLocTextCH>
        </category>
</categories>

and my stylesheet I try to apply

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="1.0" xmlns:fo="http://www.w3.org/1999/XSL/Format";>
        <xsl:template match="/categories/category">
                <xsl:call-template name="escape-apos">
                        <xsl:with-param name="text" select="." />
                </xsl:call-template>
        </xsl:template>
        <xsl:template name="escape-apos">
                <xsl:param name="text" />
                        <xsl:variable name="apos">&amp;</xsl:variable>
                <xsl:choose>
                        <xsl:when test="contains($text, $apos)">
                                <xsl:value-of select="substring-before($text, 
$apos)" />
                                        <xsl:text 
disable-output-escaping="yes">&amp;</xsl:text>
                                <xsl:call-template name="escape-apos">
                                        <xsl:with-param name="text" 
select="substring-after($text, $apos)" />
                                </xsl:call-template>
                        </xsl:when>
                        <xsl:otherwise>
                                <xsl:value-of select="$text" />
                        </xsl:otherwise>
                </xsl:choose>
        </xsl:template>
</xsl:stylesheet>

thanks for any suggestion
Christoph