XML Sablot - Pass parameters to XSLT

Hello all, I am using an XML catalog for a vendor. It contains everything about the product needed for shopping online (cost, weight, shipping, etc).

One problem. I need to pass a parameter to my XSLT so that it will ONLY show say one product. and I don't want to write multiple XSLT files.

Does anyone know how to pass a parameter to an XSLT file using sablot?

Also so you know I am using this code:

xslt_output_begintransform("./xslfile.xsl");
print $XML;
xslt_output_endtransform();

I have found one fuction, xslt_run(resource xh, string xslt_file, string data_file[, string result[, array xslt_params[, array xslt_args]]])

Notice it takes "array xslt_params". However getting thi function to actually tranform my XML is a problem.

Does anyone have an example using this function? Even if all it does is a basic implement?

If not I may have to start using the JAVA lib's, but I REALLY don't want to go there.

thanks in advance for any help you might be able to provide.

-Greg