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Your LimeSurvey version: CE 6.6.6
Own server or LimeSurvey hosting: own
Survey theme/template: fruity_twentythree
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I have some questions about Custon Javascript and the Twig variables:

1. Did I understand correctly that in the Custom.js the LS variables are not directly addressable but in the question-text they are??

2. is it a viable way to output the variables via twig instead and then read them into JS?

3. i have tried Twig solution, but am not getting anywhere in parts:

<div id=“SurveyName” style='display:none' hidden=1>{{ aSurveyInfo.name }}</div>
<div id=“QuestionNumber” style='display:none' hidden=1>{{ aQuestion.questionNumber }}</div>
<div id=“NumberOfQuestions” style='display:none' hidden=1>{{ aSurveyInfo.questioncount }}</div>
<div id=“NumberOfQuestions” style='display:none' hidden=1>{{ aSurveyInfo.numberofquestions }}</div>

Only the survey name is displayed here. What is the correct variable name of the other two variables? Where can I find the documentation for the twig variables? 
 

1. Yes.

2. Yes, I frequently load twig or ExpressionScript variables into hidden inputs and then retrieve them in custom.js.

3. Try dumping the aSurveyInfo array.

Thanks for the quick reply. that brings light into the darkness.

However, if I add
to my Twig file, the div remains empty. Is this due to the scope of the mainrow.twig ? Or am I doing something wrong?

I'm not sure what is available in that file. Try it in layout_global.twig.

I tried it with no success. I added at line 121



But the div stays empty. Do you have any idea?

In config.php, you need to set debug to 1 or 2.