xsl2 and xsl parameters

Hi there folks.

I'm a bit new to the docbook world, and am having trouble with 
customizations in the XSL2 docbook stylesheets.

What we want is no Table of Contents, and no chapter and section auto 
numbering.

What documentation I've been able to find has suggested using:

<xsl:param name="toc.max.depth" select="0" />
<xsl:param name="chapter.autolabel" select="0" />
<xsl:param name="section.autolabel" select="0" />

Which I have put into my customization layer, these parameters have no 
effect on the output document.

for the ToC I've also tried

<xsl:param name="generate.toc" select="''" />

I'm kind of lost as to how to proceed from here.  Those parameters have 
the desired effect when used in conjunction with the XSL 1 
implementation of the Docbook stylesheets, but not the XSL 2 
implementation.

I'm using the latest XSL2 snapshot, along with Saxon 8.7.3J.

Thanks in advance for any suggestions!

Cheers
-- 
Paul Warren                    |   UIN: 10374690
u3292467 at anu dot edu dot au |   MSN: 
pwarren.homelinux.org          | SKYPE: p.a.warren