[NTG-context] dorecurse within combination

Hi, I’d like to place pages from a multipage PDF in a combination: \startcombination[3*1] \dorecurse{3}{% {\externalfigure[multipage][width=\textwidth/3,page=\recurselevel]}{} } \stopcombination That doesn’t work, because ConTeXt expects a { after \startcombination. (“A left brace was mandatory here, so I've put one in.”) I guess I need some expansion, but \expanded doesn’t help. How can I do this? Hraban