I am definitely going in circles, but I cannot get it to work, simple as it might be. Can anyone send me in the good direction?

Group called random has one (equation) question called prepost with {rand(1,2)}

Group Prepost =1 has relevance prepost==1
Group Prepost=2 has relevance prepost==2

But sometimes prepost == 1 and group Prepost = 2 is shown and the other way around. What am I doing wrong?

See attached .lss. Using 2.67.3, default template

Strange: all seems to go right when I use:
if(is_empty(prepost), rand(1, 2), prepost)
for the equation. That was suggested by tpartner in another thread, but for preventing changes when a respondent reopens a survey. That is not happening here, or is it?

www.limesurvey.org/forum/can-i-do-this-w...ns-and-randomisation

When user 'reload' survey : his response come from exiting answers. Then is_empty(prepost) is false and not updated.

tammo wrote: That is not happening here, or is it?

EM is hell The equation in the attached survey had some additional tags in the question text.
Not sure if that might be an issue. Beside that everything looks fine to me.


I sometimes had issues with groups with just equations.
I normally use the first group to create all random variables and add a welcome text in that first group.

The equation in the attached survey had some additional tags in the question text

One of the reason of the equation advanced settings. To put an clean Equation : best is to use a clean textarea

Yes, I guess that would lead to just another feature request: make text area switchable per question: either HTML or plain text.

I know that many developers always use plain text and type HTML from memory, but that cannot be done when you have "normal" users...

The html editor must be improved, yes. But such feature are not really needed currently : Equation question type already have a textarea for Equation : www.limesurvey.org/manual/Question_type_...uestion_.28hidden.29