I need some help writing the code for Expressions Manager.

I want to run a psychological test with over 10 subscales and provide immediate personalized feedback based on the mixture of the scores on each subscale. I understand that it is best to use hidden Equation Questions to calculate and store the score on each subscale. Should I then simply write the Expression Manager code in the End Message field in order to replace the score with pre-defined text? Each version of feedback is based on simple score ranges.

So, let's say that the first Equation Question for the first subscale is coded as BPD. I want to display simple text in the End Message if the following condition is met.

{if(BPD.value >= 0 && BPD.value <= 9,

I don't know how to proceed. Then I want to continue with another range, that is, 10-19 and so on. Could anyone help? If you help me with the first one, I guess I will know how to do the rest.

I personally would probably use one or more text display questions on the last page before the end message, but I guess this is personal taste.

To your code: This looks pretty good already, but if you do not have values below 0 in your scale / assessment values, you could just skip that part and ask for <10, which would include 0-9. Makes the code shorter and cleaner and you don't need the AND connection.

After that you would write the text that you want. For each scale I would create nested IF loops.

So the IF loops are usually structured this way: if(formula to check, what to do, what to do else), so here is what you could do:

This isn't tested and it is assuming that the scale ends with 40. But I think you get the idea. There might be more elegant solutions. Give it a try. Maybe first test with a few ranges to see if and how it works, then go for the whole scale (I assume you go from 1-100?).

Thanks a lot. I have another problem. I'm playing with the demo right now. I want the BPD Equation Question to become the sum of answers for questions A1-A5 (radio lists with answers 1-7 coded also 1-7). I've tried typing the following in the Equation field while editing BPD:

{sum(A1.value, A2.value, A3.value, A4.value, A5.value)}

or the following:

{A1.value + A2.value + A3.value + A4.value + A5.value}

Then I typed:

{BPD.value}

into the End message field but no matter which answers I choose for questions A1-A5, I always get 0 instead of the sum.

Is the code correct? Should I enter it somewhere else? I would be grateful for some hints.

Reading this, I assume that BPD is an equation question, right? But BPD.value is referring to the assessment value of a question, which an equation question shouldn't have.

Try only {BPD} or {BPD.NOAK}.

I typed:

{sum(A1, A2, A3, A4, A5)}

into the Equation field while editing the BPD Equation Question and now it works. Now I will try the nested IFs for personalized feedback.

I had some trouble with the nested IFs, there was some syntax problem, so I wrote it all in one line. Now it works. I also believe that the final "}" mark in the code should be glued to whatever comes before, am I right? Anyway, everything seems to be working the way I wanted. Thanks again for your help.

Yes, I had a similar problem once. But to show how it works it is better to write the code in separate lines, otherwise it is difficult to read.

Glad that it worked.

Hi,

I really don't like nested system (and always use a good text editor to do complex Equation) but for kind of system, i use: Maybe more server operation, but REALLY more easy to update and fix.

Denis

Yes, nested systems can get a little confusing, when they are longer. But I personally don't like the AND options either, because it is also easy to make mistakes with the two limits (high and low).

At the end of the day it probably comes down to personal taste.