Exactly same issue than https://bugs.limesurvey.org/view.php?id=12452

Sorry to say that but this is not the case. I have updated the instance to the latest release build 170606 and the problem is still there.

you need to use the same fix applied to fix 12452 also for the scale question
something like this should do the trick

diff --git a/scripts/expressions/em_javascript.js b/scripts/expressions/em_javascript.js
index 25ad200..f4b2474 100644
--- a/scripts/expressions/em_javascript.js
+++ b/scripts/expressions/em_javascript.js
@@ -786,7 +786,7 @@ function LEMval(alias)
// If it's not a decimal number, just return value
try {
var decimal_safe = new Decimal(value);

• return pad(decimal_safe,value.length);
• return parseFloat(decimal_safe.valueOf());
  }
  catch (ex) {
  return value;

parseFloat will also allow invalid numbers to become numbers. Just number() is better, I think.

@c_schmitz: OK to test and fix it ?

@c_schmitz number() is ok for me

@c_schmitz bug is still there as of today (Version 2.67.2+170719).

the patch above fix the problem (using number).

Do you want me to submit a PR to the GH repo?

Sure, please do.

ok great, will do it today

done.

see https://github.com/LimeSurvey/LimeSurvey/pull/783