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Your LimeSurvey version: LimeSurvey Community Edition   Version 6.6.1+240806 
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Hey guys, 

I despair of the ExpressionManager. Is it possible to set the number of remaining uses of an access code to 0 when a question group is opened or closed? Setting it at the end of the survey is unfortunately too late for my purposes. A participant should only be able to see the questions once. Currently, the survey can be started with the access code until the submit button is clicked on the last page.

Thanks a lot! Florian

You cannot set participant properties via ExpressionScript.

A possible solution may be to make an AJAX call to a script that uses the API set_participant_properties() method to adjust the uses left.

Here is an old post that may be useful - forums.limesurvey.org/forum/can-i-do-thi...-add-response#162815

- www.limesurvey.org/manual/RemoteControl_2_API
- api.limesurvey.org/classes/remotecontrol...rticipant_properties

Hi,
you obviously have a closed token based survey.
Now I do not see your problem.
With the correct setting of "Enable token-based response persistence"
[url] www.limesurvey.org/manual/Participant_settings/en [/url]
the respondent returns to the page where he left the survey and does not start at the beginning.
And with a hidden "back button" everything is fine, IMHO.

With your idea you exclude respondents who have to interrupt the survey because the bell is ringing, the baby is crying, the daily soap starts, etc.

Joffm

P.S.
Maybe I misunderstood, but there may always be a language gap. (Hättest Du auf Deutsch geschrieben, ...)