Carry over "Other: input" across multiple questions using Array filter

I guess you need to create the subquestion relevance for this item to show in Q3 based on Q2, but you need to pipe the text of this response from Q1.

If you want further help, please attach a LSS file with only the relevant questions (copy your survey, delete everything that isn't necessary for the problem, export it and upload it here).

It seems to me that you should reference {Q1_other} in all other questions as this is the only place to enter text.

Additionally, you don't need the sub-question relevance in Q3 or Q4 - the simple array-filter will do.

Sample survey attached: 

Your problem is, as I described before, that you are referring in Q3 to {Q2_other}. There is no "other" in Q2. So Limesurvey can't find it, of course.

It is actually SQ007. So you would need to refer to it as {Q2_SQ007}. However, for piping in the text, you most probably need to use {Q1_other} for all of them, because you can't pipe an already piped text into another question, if you know what I mean?

You also can't use this relevance equation in Q3, because as I said, there is no "other" option in Q2:
Also you need to address it completely different, as this is now a normal subquestion item of a multiple answer question.

You'll need something like:

OK, so I was too slow, Tpartner was quicker. But here also my LSS, I kept the subquestion relevance equations but corrected them to what you need.

There were several problems:
- There is no Q2_other or Q3_other, but only Q2_SQ007 and Q3_SQ007. In Q2, Q3 and Q4 this is a "normal" subquestion, no other field anymore, so you can't access it via {questioncode_other}, but need to use {questioncode_subquestioncode}

Similar to that, the relevance equation with "!is_empty" won't work, for the same reason. You need to check if the specific subquestion has been checked with something like {questioncode_subquestioncode=="Y"}. Actually, thinking about it, !is_empty probably will work too, but you can't reference it with "questioncode_other". This still stands.