David Carlisle wrote:
> 
> ah, in that case you'd need to use an extensin function eg
> saxon:function so you can get the for-each inside the Xpath select
> attribute, or use XSLT2/Xpath2 which alows you to go
> document('jhg.xml')/key(...)
>

oh.. thanks! 
then I think we better take the other option ($ref variable)

Anton