I agree to holch,
use Expression Manager.
Read here:
www.limesurvey.org/manual/Expression_Man...ons_and_Relevance.3F
while the second con of relevance "New, so support teams have not mastered EM yet." is absolutely outdated.
But, first: Why did you use these answer option codes? Your scale is obviously ordinal.
In my opinion later you will analyze this question, calculate some statistical measures, like mean, std.deviation, calculate a t-test, and so on.
Now there are strings as answer option codes (meaning a nominal scale) which you have to recode in your statistic tool. (or only CHI-square)
Okay, your question:
Using 1,2,3,4,5 as answer option codes your relevance equation for Q2 is just:
Q1_Q1a>3 OR Q1_Q1b>3
This you write into the field "relevance equation".
Or to stay to your answer option codes:
Q1_Q1a==Q1d OR Q1_Q1a==Q1e OR Q1_Q1b==Q1d OR Q1_Q1b==Q1e
Joffm