Changing encoding using a parameter

I want to change the encoding of an XML file based on a parameter that I
pass into the XSL.  How would I go about doing that?  I know how to pass in
the parameter, but I need the encoding to be changed based on the
parameter.

<?xml version="1.0" encoding="UTF-8"?>
<People>
     <Person>
          <FirstName>Matt</FirstName>
          <LastName>Youngblut</LastName>
     </Person>
</People>

-----------------------------------------------------------------------
<?xml version="1.0"?>
<xsl:transform version="1.0" xmlns:xsl
="http://www.w3.org/1999/XSL/Transform">
     <xsl:param name="PARAMETER">UTF-8</xsl:param>

     <!-- I need to plug in the encoding change somewhere.  But WHERE, and
HOW? -->

     <xsl:template match="/">
          <xsl:copy-of select="."/>
     </xsl:template>
</xsl:transform>

Thanks in advance,
     Matt Youngblut


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