Hi Hans, I try to set and access a reference in the example below but both \in and \at result in a fatal error. What’s missing in my code, I looked in the float and math code but I can’t find a solution. \starttexcode \installnamespace {test} \installcommandhandler \????test {test} \????test \installstructurelistprocessor{test}{\usestructurelistprocessor{number+title}} \unexpanded\def\test_cmd[#1]#2#3% {\begingroup \edef\currenttest{#1}% \dostructurecountercomponent {test}% \setupcurrenttest \testparameter \detokenizedtestparameter \relax \relax \relax [\c!name=\currenttest,% \s!counter=\currenttest,% \s!hascaption=\v!yes,% \s!hasnumber=\v!yes,% \s!hastitle=\v!yes,% \c!reference=#2,% \c!title={#3}, \c!bookmark=]% []% \laststructurecountersynchronize \attribute\destinationattribute\laststructurecounterattribute\emptyhbox \endgroup} \appendtoks \setuevalue\currenttest{\test_cmd[\currenttest]}% \to \everydefinetest \appendtoks \definenumber[\currenttest]% \definelist [\currenttest]% \to \everydefinetest \stoptexcode \definetest[test] \setupnumber[test][prefix=yes] \starttext \placelist[test] \blank \test{test:1}{This is the title!} Test 1: \getnumber[test] \test{test:2}{This is the next title!} Test 2: \getnumber[test] \blank \in{test}[test:2] \at{page}[test:2] \stoptext Wolfgang