I have a problem, I tell it with the example:

Q1 is a multiple choice question, with subQ 1,2,3....

I want to only ask Q2 (multiple choice, array filter: Q1) from people who checked minimum 2 answer. (so if you checked only 1 in Q1, jump the queston).

I tried the following:
Relevance equation:
sum(Q1_1,Q1_2,Q1_3,...,Q1_n)>1

But it doesn"t want to work.
And I have Version 1.92+ Build 120608, the newest.
Anyone can help me?

Thanks a lot!

Try:

Another option is:

Thanks for you answers.
I tried it in my survey, but it didn't want to work
But, your formulas are good, I tested it in a small "test" survey wth only 2 questions. Both formulas worked well, as I need it.

So I really don't understand, why it doesn't work in my real survey. In that survey the question has 26 subquestions (anwer options). Could it be the problem, the too many subquestions?

Too many options shouldn't be the problem.

Please attach your question group for testing.

I attached the survey (I copied into a new one, the questions).

There are some array filter. Do they can modify the validation?

I tried these validation equations:

count(Q17_1, Q17_2, Q17_3, Q17_4, Q17_5, Q17_6, Q17_7, Q17_8, Q17_9, Q17_10, Q17_11, Q17_12, Q17_13, Q17_14, Q17_15, Q17_16, Q17_17, Q17_18, Q17_19, Q17_20, Q17_21, Q17_22, Q17_23, Q17_24, Q17_25, Q17_26) > 1

sum((Q17_1 == 'Y'), (Q17_2 == 'Y'), (Q17_3 == 'Y'), (Q17_4 == 'Y'), (Q17_5 == 'Y'), (Q17_6 == 'Y'), (Q17_7 == 'Y'), (Q17_8 == 'Y'), (Q17_9 == 'Y'), (Q17_10 == 'Y'), (Q17_11 == 'Y'), (Q17_12 == 'Y'), (Q17_13 == 'Y'), (Q17_14 == 'Y'), (Q17_15 == 'Y'), (Q17_16 == 'Y'), (Q17_17 == 'Y'), (Q17_18 == 'Y'), (Q17_19 == 'Y'), (Q17_20 == 'Y'), (Q17_21 == 'Y'), (Q17_22 == 'Y'), (Q17_23 == 'Y'), (Q17_24 == 'Y'), (Q17_25 == 'Y'), (Q17_26 == 'Y')) > 1


And I really don't understand why it doesn't work, because I tested it another small survey and both method were excellent...

Could you help me?