xslt param with libxslt ....errr!

[Jtzero 511]

this one is driving me up a wall, I cant seem to pass a param to the
xslt what is wrong here? I keep getting nothingness...

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">

<xslaram name="stylesheet"/>

<xsl:template match="/">
<xsl:copy-of select="$stylesheet"/>
</xsl:template>
</xsl:stylesheet>

and heres the ruby code

require "rubygems"

require 'xml'
require 'libxml'
require 'libxslt'

xsltdoc = XML:ocument.file("main.xslt")
xslt = LibXSLT::XSLT::Stylesheet.new(xsltdoc)

xml = XML:ocument.file("file.xml")
result = xslt.apply(xml, {:stylesheet => "style.css"})
puts(result)


thank you,