Hi, I'm trying to generate daily reports and wanted to include the date in bookmarks, but there is some weird (non)expansion going on. I might just as well switch to lua for certain parts of the document (like cycling through dates), but I suspect that there must be some trivial hack to prevent me from getting my sections labeled date[y={2016},m={06},d={25}] \setupinteraction [state=start] \placebookmarks [chapter,section,subsection] [chapter,section] \setupinteractionscreen [option=bookmark] \def\generatesection#1#2#3{% \edef\dt{\date[y={#1},m={#2},d={#3}][year,-,mm,-,dd]} \setupheadertexts[{\dt}][pagenumber] \section{\dt} % \externalfigure[#1#2#3.pdf] } \starttext \chapter{Daily files} \generatesection{2016}{06}{25} \generatesection{2016}{06}{26} \stoptext Thank you, Mojca