mediaobject in lots tocs

I have some SVG 'diagrams' in mediaobjects

<xsl:param name="generate.toc">
book toc, title, mediaobject
chapter toc, title, figure, table, mediobject
sect1 toc,title

</xsl:param>

Doesn't include them in the tocs?

Is this possible please?
db5, 1.75 stylesheets.

I see them as no different to figures?

regards

-- 
Dave Pawson
XSLT XSL-FO FAQ.
http://www.dpawson.co.uk