Is it possible, if someone select "Don't know" option in multiple selection, s/he could not select any other option?

1. What is the problem? Be very detailed.

2. What app or server are you using and on what device and operating system? Include version numbers.

3. What you have you tried to fix the problem?

4. What steps can we take to reproduce the problem?

5. Anything else we should know or have? If you have a test form or screenshots or logs, attach below.

It's possible. If you are developing a form in excel put this under constraint column. Check you can not forward selecting 88 with any other options.

not((selected(.,'1') or selected(.,'2') or selected(.,'3')) and (selected(.,'88')))

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Thanks a lot. I will try this.

Alternatively, if you have a lot of options, something a bit shorter is

not(selected(.,'88') and count-selected(.) > 1)

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Used "and" instead of "&&" and it works.

Oops. Mixing my XPath and C again... sorry :relaxed:

Fixed. Thnx!