I have a question in which I want to distribute 10 points over 4 categories.

So the question is set up as an Array (10 point choice) with 4 option questions. each option has 11 radio selections ( 1-10 and no answer )

i am trying to get a total (sum) for the 4 responses and ensure that they all come up to 10.

none of my validation equations seem to work!

ive tried (sum(q1_SQ001.value, q1_SQ002.value ,q1_SQ003.value, q1_SQ04.value) = 10)

Aaargh help please.

I really am battling to get to grips with the formulation of the equations, is there a good explanation of the .'s and _'s, braced and brackets terms somewhere?

I see a couple of problems...

1) You are using the wrong operator - manual.limesurvey.org/Expression_Manager#Operators
2) You don't need the .value extension unless you are trying to access the assessment value - manual.limesurvey.org/Expression_Manager#Access_to_Variables

Either of these should do the trick:

Massive step closer. Thanks TP.

Just had to wrap it differently as

(sum(that.Q1) == 10)

if i wrapped the outer in curlys it stopped validating.

Odd but I'm not questioning it at the moment.

relevance equations = no curly brackets
normal equation questions and anywhere else = curly brackets

Weird why in the relevance equations we can not use curly brackets but in the other situations have to. saves a few milliseconds writing the code, but lacks of consistence.

Problem is now sorted. Thanks for the help. I have a working survey!

holch wrote: Weird why in the relevance equations we can not use curly brackets but in the other situations have to. saves a few milliseconds writing the code, but lacks of consistence.

In relevance : we wait for a value: then a "evaluation". On other oart : by default it's text , we can force EM with bracket.

About some better GUI : added it in advanced settings


You're right : same in relevance seems OK. If you find another place too

Added for relevance

In relevance : we wait for a value: then a "evaluation". On other oart : by default it's text , we can force EM with bracket.

I understand where it comes from. In some parts there can only be an equation, so then there is actually no need to put {}, but as I said, it is confusing at the beginning, because you "learned" that equations need curly brackets.

Looks good your GUI solution.