I have this error while iam using a position(..) function with repeated group. the problem appear when i deselect choices from multiple choice question.
Calculation Error: Error in calculation for /data/diagnosis1/HD/position_num1 Unable to evaluate
position on /data/diagnosis1/HD, which is empty.
the scenario as follow:
- Multiple choice question
-repeated group depended on the choices
-every group has a calculation for position
-if i select normal choices its ok, but if i select then deselect the problem appear.