I have problems passing parameters from C# application to XSL file and
doing a transformation.
My code is below.:

XsltArgumentList xslArg = new XsltArgumentList();

String key = "grandpa/father/son";    // This is the name of node I
want pass and gets it value
xslArg.AddParam("xslParam", "", key);

// Create the XslTransform and load the stylesheet.
XslTransform xslt = new XslTransform();
xslt.Load(stylesheet); // xsl stylesheet

XmlUrlResolver xmlUrlResolver = new XmlUrlResolver();

// Output to console.
XmlTextWriter writer = new XmlTextWriter(Console.Out);

// Transform the xml file
xslt.Transform(new XPathDocument(filename), xslArg, writer,
xmlUrlResolver);

 writer.Close();

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

XSL file looks like this

<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:param name="xslParam"/>
  <xsl:template match="/">
      <alku><xsl:value-of select="$xslParam"/></alku>
  </xsl:template>
</xsl:stylesheet>


The problem is that node grandpa/father/son is not executed! It's
passed to XSL file
but XslTransform classes transsform method does not fetch it's value
from xml file.
It only shows the key value in console. Node grandpa/father/son has
value in it's
xml file.

So, am I missing something or is there a bug in XsltArgumentList and
it's transformation.

Has anyone any ideas what could be wrong?

Cheers!