I'd like to auto-tick multiple-choice answer based on a previous answer.

For example

Question q1: Select your documents

> Subquestion a: Document A [ ]
> Subquestion b: Document B [ ]
> Subquestion c: Document C [X]

i.e. User selects Document C

Question q2: Select your documents

> Subquestion d: Document D
> Subquestion e: Document E
> Subquestion f: Document C [X]

i.e. User doens't need to select another time Document C, it is auto-selected.

I tried using relevance equation for Subquestion f as it follows:

but this code only hide the question.

The relevance equation is only there for hiding/showing questions.

What you will probably have to do is create a hidden equation type question, check if a subquestion has been checked and then mark it.

Probalby something like this (not tested, and you will of course have to make adaptation to fit for your survey):
Something like that.

holch wrote: Probalby something like this (not tested, and you will of course have to make adaptation to fit for your survey):

Code:

{if(q1_c=="Y", q2_f="Y",)

Something like that.

No, it never work.

Asignation must be done like this:
{q2_f=if(q1_c=="Y", "Y","")}

{QuestionToAssign=ValueToSet}

Not in other way

No, it never work.

I noticed that. I played around a little, and it did not work.

Thanks for skipping in and proposing the correct way.

holch wrote: …

Thanks for skipping in and proposing the correct way.

Thanks to you for all community help you offer gracefully

But somehow your solution didn't work for me either.

I assumed it works only if the second question is on a different page, but it didn't.

Do you see any errors?