Heppa,

> when xml-file contains several elements (information)and they 
> have element which
> tells the date of input and then there is element that tells the
> clock time of input and another element called subject.  
> 
> How can I find out which one is the last one and
> then select it's subject elements content? 

Sort them by date and time (in that order) and then select the position() = last().

Cheers,

Santtu

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