> I've got a docbook-table and I have to specify the number of columns 
> with the tag <tgroup cols="5">
> 
> 
> The number of columns depend on the xml: that's how I get this number:
> 
> <xsl:variable name = "years">
> <xsl:value-of select='count(energiebericht/energieverbrauch/@jahr)'/>
> </xsl:variable>

That's a long-winded and expensive way of saying

<xsl:variable name="years" 
    select='count(energiebericht/energieverbrauch/@jahr)'/>

> 
> But How do I put this value into  <tgroup cols="?"> ???
>

<tgroup cols="{$years}">

Michael Kay
Software AG
home: Michael.H.Kay@xxxxxxxxxxxx
work: Michael.Kay@xxxxxxxxxxxxxx  


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