Usually admins of something like university installations set this to ON, to prevent users to do any harm by cross side scripting.

Meaning you can't insert javascript.
But nearly everything you can achieve with the built-in features.

Hmmm, but that probably means that I wont be able to do arrays (TEXT) with dd list, without permission to do java script (off XSS-filter)?

Cause at the moment I can do it with online version (where I have changed the security settings) but when I import my pre-done question to version where XSS-filter is on I dont get the dd list in the the array (the same error with undefined variable)

Thanks in advance.

Sorry, but what do you mean by "online version"?
LimeSurvey always is an online application.
Even if on an local XAMPP server.

But it doesn't matter.

As I said before: If for some reasons you are not able to do one thing, change the design of your survey.
Everything is possible with built-in features and in my opinion better regarding usability.
E.g. a array(text) with dropdows.
The user always has to click twice to answer one cell.
If you split it into several - normal - arrays the user only clicks once.

But, as always: Everything is up to you.

Joffm

Yep, sorry, with online I meant the version which I manage by myself (Version 3.22.14), not the professional account managed by the institution (Version 4.1.14+200331).
Anyways, thanks Joffm, you have been very helpful.