But INSERTANS:SIDXGIDXQIDother always has "no answer" regardless if other option was answered or not.
This appears to be a bug. Please
file a bug report and...
1. Give as much information as possible.
2. Provide step-by-step instructions how to reproduce the problem.
3. If possible/helpful please provide screenshots.
4. Afterwards please post the link to the bugtracker here so we can follow the progress.
Is there really no way to determine if other option was checked in multiple question?
If the survey is not in question-by-question mode, you can use JavaScript to populate a hidden question depending on the state of "Other" and then set conditions based on the hidden question.
Otherwise you could set a cookie but that gets a little messy.