it's me again. I have trouble with cascaded questions which depends on previous answers.
At first I have a question (code QA) with two possible answers (optionlist) (QA_A1 and QA_A2).
After this I have two other questions (X1 and X2) with each two options again (X1_AA/X1_AB and X2_AC/X2_AD). X1 should be displayed if QA=A1 (relevance equation: QA=="A1"). X2 should be displayed if QA=A2 (relevance equation: QA=="A2"). That works perfect.
Now I want to display a question (code XY) either X1 is AA or X2 is AC. In the other two cases the question shouldn't be displayed.
First idea for the relevance equation in question XY was X1=="AA" or X2=="AC", but failed. I tried nearly everything to enter in the relevance equation of XY but nothing worked (if logics; is_empty, etc.). I become despair. I ecpect the problem, that there is no answer of X2 if I can answer X1 and vice versa, so the equation has no solution?
Hooray!
it works. I tried this thing with the NAOK but obviously not correct.
I didn't know the exact difference before, but the manual helps as usual: "Not Applicable (NA) is alright (OK)" (
www.limesurvey.org/manual/Expression_Manager_HowTos
)