Hi everyone,
For this survey, I want people to choose between two 2 people, A or B.
And if they want, they could tick a 3rd answer "random draw".
I didn't manage to made the choice "Person A" or "Person B" compulsory and at the same time "Random draw" optional with a question validation equation.

I've tried several things :
- I used to assign an assessment value to each subquestion, but it's doesn't work with MCQ, so I used a table : if(sum(Q1_SQ001.value, Q2_SQ002.value) >= 1, 1, 0)
- I tried to use some fomulas : if(Q1_SQ001.question=="Person A", 0, if(Q1_SQ002.question=="Person B", 0, 1))
- Or this formula ("random draw" for the entire SQ003 subquestion) if(Q1_SQ003=="random draw", 0, 1))

With each formulas, in the logical module, I have this formula : I've looked for other topics on question validation equation, but I didn't find something about this sum. 

Please let me know if someone have an idea.
Thanks a lot.
Taka

Try this:

Many thanks, it works

Kind regards

Taka

Wait. You have 3 answers. Either Person A, or Person B or random.

Isn't that simply a single choice question with 3 answer options??

Hello Holch,

Here are the possible answer pattern :
- Person A
- Person B
- Person A + random
- Person B + random

I don't want people to pick "random" alone without choosing between A and B, and indeed the formula Tony gave work perfectly.

Many thanks to you and Tony

Taka

Ahhh, OK, this didn't make sense to me. Now it is clearer.