Hello Wolfgang!

I have now written as you told me.

\starttext

\placecontent

\setupuserpagenumber[numberconversion=romannumerals]

\startchapter

\startchapter[title={Bildbeschreibung der Cover-Grafik}]

\setupuserpagenumber[numberconversion=numbers]

\startchapter

[title={Einleitung:"Entwicklung" behindern?}]

\stoptext

Ähm where do i set the counter. I mean when I set\setcounter?