font size of programlisting monospace text

Hi there,

 

I was trying to change the font size of programlisting
text (formatting objects).

 

I was trying:

 

<xsl:attribute-set
name="monospace.verbatim.properties">

<xsl:attributes
name="font-size">8pt</xsl:attributes>

</xsl:attribute-set>

 

But nothing changed.

 

What is the easiest was?

 

Thanks.

            Hinrich