How can I pass a parameter to my xslt stylesheet with Saxon under Java?

Question

I am using Saxon 9 HE and in NetBeans 7.0.1, I get the following error when I try to send a parameter to my stylesheet:

Just to make sure, is that the good way to send a parameter so I can get it back with

<xsl:param ... /> ?

If so, how can I use it?

Thank you!