Relevance condition based on summed questionnaire score - by: gorp

Hi
I want to sum the score of a questionnaire and then based on this score show different question groups after that...

I have two questions using List (Radio): code 1 = tiredness and code 2 = down. Each question have answers coded from 0-3.

Depending on the summed score on these two question I would like to show different question groups. If the summed score is "equal or less than than 4" show QuestionGroup1, if "equal or more than 5" show QuestionGroup2.


So in the Relevance box for QuestionGroup1 I wrote (( tiredness + down <=4))
And in the Relevance box for QuestionGroup2 I wrote ((tiredness + down >=4))

This works for "equal or more than"; but not for "equal or less than". (Then the screen just gets empty...)

Any help is much appreciated.
Thanks
Gorp