How to pass the value to a user-defined function in XSLT

Question

I want to pass the value of employee_name that I get from XML to a user-defined function in XSL. Please see the code below:

<xsl:for-each select="employees/employee">
  <xsl:value-of select="employee_name"/>
  <xsl:value-of select="
    my:compareCI(
      '--how to pass employee_name Value--',
      '--how to pass employee_name Value--'
    )
  " />
</xsl:for-each>

Please any help me as I am new to XSL.

Answer 1

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:ns1="http://www.example.com"&gt;


    <xsl:function name="ns1:functionName">
     <xsl:param name="employee_name"/>
     <xsl:value-of select="$employee_name"/>
    </xsl:function>

    <xsl:template match="/">
     <xsl:value-of select="ns1:functionName('John Doe')"/>
    </xsl:template>
</xsl:stylesheet>