Le 04 août à 19:24:20 Wolfgang Schuster
| > Le 04 août à 18:14:45 Wolfgang Schuster
| \setupcaptions[way=bysection,prefixsegments=chapter] | \setupformulae[way=bysection,prefixsegments=section]
| You use for the formula the section number as prefix while floats use chapters.
| In your example there had been section but no chapter and therefore | you get a prefix for formulas but none for floats. Wolfgang, thank you for your patience, I do need rest! -- Jean