Character substitution

Hello,

i looked at the FAQ and i found the solution to replace characters. But the 
variable text is empty resp. match="text()"
and then the . returns nothing.
How can i substitute the € character?

Thanks and best regards
Sven

my xsl:
--------------------------------------------------------------
<xsl:template match="text()">
   <xsl:call-template name="change" >
        <xsl:with-param name="text" select="."/>
   </xsl:call-template>
</xsl:template>

<xsl:template name="change">
   <xsl:param name="text"/>
        <xsl:value-of select="$text"/>
        <xsl:choose>
                <xsl:when test="contains($text, '€')">
                        <xsl:value-of select="substring-before($text, '€')"/>
                        &#8364;
                        <xsl:call-template name="change">
                            <xsl:with-param name="text" 
select="substring-after($text,'€')"/>
                        </xsl:call-template>
                </xsl:when>
                <xsl:otherwise>
                        <xsl:value-of select="$text"/>
                </xsl:otherwise>
        </xsl:choose>
</xsl:template>

--------------------------------------------------------------

my xml:
--------------------------------------------------------------
<?xml version="1.0" encoding="ISO-8859-15"?>
<test>
    <header>
        <creation date="2005-01-10" timestamp="1105349670236" user="sven" 
login="sven" />
    </header>
    <test-t id="35" >
        <numbering>1</numbering>
        <name><![CDATA[TT€]]></name>
        <path><![CDATA[/TT€]]></path>
    </test-t>   
</test>
--------------------------------------------------------------

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