holch wrote: Doesn't require the step of the equation question.

The extra steps saves the displayed value inside the results. If there is a bug or a problem, you always know what was choosen by the routine.
It also helps for debugging. If you made a mistake you don't need to change it in every questionstext. Just at one place.

@Jelo: Makes sense. Good advice, especially for debugging just in one place, not in the whole survey.

Hello,

with a slight delay (became father last week) I could try it and indeed, it works perfect. Thanks a million.


[SOLVED]

Well congratulations on both then: the baby and the working example...