This is the problem: It works, but I don’t unterstand why. I make just 
my first steps with ConTeXt…

Anyway: I found out, that this is the best solution:

     \defineconversionset[frontpart:pagenumber][][romannumerals]
     \defineconversionset[bodypart:pagenumber][][numbers]
     \defineconversionset[backpart:pagenumber] [][characters
     \defineconversionset[appendix:pagenumber][][Characters]
     \setupuserpagenumber[numberconversionset=pagenumber,way=byblock]

Now it’s not nessecary to reset the pagenumber.

Thanks for the hint about the Sample texts.

Best regards.

WH


On 22 May 2014, at 12:56, Otared Kavian wrote:

> On 22 May 2014, at 12:44, Werner Hintze <we.hintze@gmail.com> wrote:
>
>> Thank you once more! This looks better. It’s a pity that such 
>> things are not »wikified«… ;)
>
> Once you think you have well understood something do not hesitate to 
> wikify it…
>
>> But there is a new surprise: What is knute.tex, ward.tex and 
>> tufte.tex? Are there more of those texte? And how does one finde 
>> them?
>
> Look where you have installed the ConTeXt tree, in the following 
> directory
>
> 	tex/texmf-context/tex/context/sample
>
> you’ll find some other sample files which can be input for testing: 
> they are very useful!
>
> Best regards: OK
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