I want to restrict access to a survey to those who know a password - the same password for all users.

There are several threads that advise you how to do this, (create a short text question and then put conditions on all the subsequent questions)
The problem is I have NO idea how to write the condition.

Can I use a constant value, or does it have to be regex. What would that look like?
For example, if later questions only display if the user enters "Cats" in that first question, what do I put in the condition.
Can anyone take pity on me?

yes of course!

the best is download and import the attached survey with both,
password with regex and password using conditions
...+ instructions

Ben/

Thanks so much, Ben

When using the condition editor, you an "question X equals 'wgbwrigiwi' (constant)" expression.

When using the expression manager, a relevance equation like:
((pwquestion == 'mysecretpassword'))

...should do the trick ("pwquestion is the question code).

Thank you so much Mazi.

Ben had already helped. Actually, I had tried the correct way myself, but it hadn't worked because I hadn't copied the condition to the whole group.