I found in the wiki how to hide a question if another question is empty, but this ( [tt]!is_empty(SITU_1_BRAN)[/tt] ) doesn't work if the independent/first question is a multiple choice question. How to solve? I could add every single sub-question of the MC question, but that's a lot of copy-paste-edit.

I tried adding a regular expression ( [tt]!is_empty(SITU_1_BRAN_{[1-18]})[/tt] ) but that didn't work either, as the 'syntax is not supported' (or maybe I'm using the wrong syntax/using the syntax wrongly).

See : www.limesurvey.org/manual/Expression_Man....27that.27_variables

{count(that.SITUx1xBRAN.NAOK)>0}

BUT it don't work with SITU_1_BRAN due to _

Thanks so much!

Yesterday I installed the latest version of LS on my own website (rather than relying on an old version provided by my university) and that meant that the underscores were all removed. So it works now I entered [tt]count(that.SITU1BRAN.NAOK)>0[/tt] in the relevance equation.

I think I should do a regex course or sth before being able to understand the LS wiki