I have a simple XSL file:

```
<?xml version='1.0'?>
<xsl:stylesheet xmlns:xsl='http://www.w3.org/1999/XSL/Transform' version='1.0'>
<xsl:param name='x' />
<xsl:param name='y' />
<xsl:template match='/Sensor'>
  <svg xmlns="http://www.w3.org/2000/svg" version="1.1">
    <x><xsl:value-of select="x"/></x>
    <y><xsl:value-of select="y"/></y>
    <text x="x" y="y" font-family="sans-serif" font-size="24px" fill="black">TEST</text>
  </svg>
 </xsl:template>
</xsl:stylesheet>

```

And I am using this code:

```
var xx = 20;
var yy = 30;
var argsList = new XsltArgumentList();
argsList.AddParam("x", "", xx);
argsList.AddParam("y", "", yy);
var xelement = ConvertToXml(sensor);
var transformedElement = new XElement("Sensor");
using (var writer = transformedElement.CreateWriter())
{
 var xslt = new XslCompiledTransform(true);
 xslt.Load(transformFile);
 xslt.Transform(xelement.CreateReader(), argsList, writer);
}
return transformedElement;

```

My final output HTML displayed in the browser is:

```
<Root>
 <svg version="1.1" xmlns="http://www.w3.org/2000/svg">
  <x></x>
  <y></y>
  <text x="x" y="y" font-family="sans-serif" font-size="24px" fill="black">TEST</text>
 </svg>
</Root>

```

I'm trying to get the value of xx into the value of the SVG text x, and the value of yy into the value of the SVG text y. I.e. for the HTML to be:

```
<text x="20" y="30" font-family="sans-serif" font-size="24px" fill="black">TEST</text>

```

I have tried several variations on this but can't get it to work. What am I doing wrong?