Our journal is currently in the process of moving to continuous publication of items in a given volume as they are ready. This entails re-jigging the ToC so that it now includes the start and end page numbers of each item. So far, I have everything pretty much in the right place, but for the page numbers I am getting only “??”. I am not sure why this is happening and would be grateful if someone could tell me why or point me to documentation that explains the problem and how to solve it. Many thanks in advance. My minimalish working example: \definehead[SourceTitle][chapter] \setuphead[SourceTitle][page=yes, footer={ItemData}] \definehead[StudyTitle][chapter] \setuphead[StudyTitle][page=yes, footer={ItemData}] \definetext[ItemData][footer][ {\at[\Reference]– \at[\namedstructureuservariable{}{authorInitials}endPage]} ] \setuplist[SourceTitle][ state=start, textcolor=black, alternative=startendpages, criterium=all, headnumber=no, interaction=page, numberalign=flushright, before={\blank[2.2ex, fixed]}, inbetween=\endgraf, ] \setuplist[StudyTitle][ state=start, textcolor=black, alternative=startendpages, criterium=all, headnumber=no, interaction=all, numberalign=flushright, before={\blank[2.2ex, fixed]}, inbetween=\endgraf, ] \define\ToCEntry{% \structurelistuservariable{author}\crlf \structurelistuservariable{title}\hfill% \at[\structurelistuservariable{reference}]–% \at[\structurelistuservariable{authorInitials}endPage] } \definelistalternative[startendpages] [renderingsetup=list:startendpages] \startsetups[list:startendpages] {\ToCEntry} \vglue1pc \stopsetups \starttext {\tfa\bf Contents} \blank[line, fixed] \WORD{Sources} \blank[halfline, fixed] \placelist[SourceTitle][criterium=all] \blank[line, fixed] \WORD{Studies} \blank[halfline, fixed] \placelist[StudyTitle][criterium=all] \page[makeup] \setnumber[userpage][1] \def\Reference{RefSo01} \startSourceTitle[reference={\Reference}, bookmark=Source01, title={}][ title=Source01, author=Author01, authorInitials=ABC, reference={\Reference}, ] \input knuth \page \dorecurse{25}{\input ward\par} \reference[ABCendPage]{} \stopSourceTitle \page[makeup] \setnumber[userpage][1] \def\Reference{RefSo02} \startSourceTitle[reference={\Reference}, bookmark=Source02, title={}][ author=Author02, title=Source02, authorInitials=PQR, reference={\Reference}, ] \input knuth \page \dorecurse{10}{\input ward\par} \reference[PQRendPage]{} \stopSourceTitle \page[makeup] \setnumber[userpage][1] \def\Reference{RefSt01} \startStudyTitle[reference={\Reference}, bookmark=Study01, title={}][ author=Author03, title=Study01, authorInitials=XYZ, reference={\Reference}, ] \input knuth \blank[big] \page \dorecurse{15}{\input ward\par} \reference[XYZendPage]{} \stopStudyTitle \page[makeup] \stoptext Alan