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Hi,
I have four single choice questions with the same four answers and want to make sure that once an answer is selected, it cannot be selected in any of the other questions.
Can I do that with array filter exclusion? I've tested on two questions by entering the code of the first in the array filter exclusion field of the second:


I have also made sure that all answers have the same code.

Unfortunately, selecting an answer in the first question greys all answers from the second.
Is it possible to use array filter exclusion so as to exclude single answers only?

Best regards,
Olivier

 

Array filter does not work with single punch questions as a source of the exclusion. So you would have to work around this with multipunch questions set by equation questions.

Or validate the questions with the unique() function.

- www.limesurvey.org/manual/ExpressionScri...#Access_to_functions