[xsl] Could not use matches in Regular Expression (XSLT 2.0)

[Jack Bush <netbeansfan@xxxxxxxxxxxx>]

Hi Forum members,

I
am new to XSLT 2.0 and would like to do the following
basic numeric string pattern
matching using regular expression:

<xsl:template
match="ns:p[ns:strong='Telephones:']">
  <xsl:choose>
    < -- If global
parameter $TELEPHONE_AREA_CODE equals to FAIRYLAND -->
    <xsl:when
test="$TELEPHONE_AREA_CODE = ''FAIRYLAND">
      <xsl:for-each select="ns:a">
<-- Only accept the phone number that starts with 4 follow by six digits....
---> 
        <xsl:if test="matches(.,4[0-9][0-9][0-9]0-9][0-9][0-9])">
<phone_number><xsl:value-of select='.'/></phone_number>
        </xsl:if>
</xsl:for-each>/>
  ......

However, it is picking up phone numbers starting
with 1 instead. Also tried the starts-with() with the same outcomes.

I am
using JDK1.6.19, Netbeans 6.7, JDOM 1.1, Saxon 9.1 on Windows XP.

Your
assistance would be much appreciated.

Thanks in advance,

Jack