Consider the scenario where I put the formula for correct answer as log(1-{a}).
In the default data set at page 3 it evaluates for the value of {a} from the range 1 to 10 which gives us NaN. Inspite of changing the range for e.g 0.1 to 1,which will give us some determinate value, we are not able to add the data sets because it again internally evaluates the expression for the value of {a} ranging from 1 to 10.
Below are the screenshots for the same thing which I am trying,which will help in understanding the scenario in a better way.
1) Default Values taken for evaluation of the given formula which results in NaN.
2) After updating the data range
things are fine till here,but the bug arises when I hit Add item or display item,check below screenshot.
As you can see,on clicking add item,although the range is updated to 0.1 to 1, while evaluating it takes the value of wild card from the default range only.Because of this bug we are not able to add any data set in the question.
The workaround which helped us was :
First write the formula which doesn't gives us NaN for e.g log(1+{a}) , add at least 1 correct data item for this formula then edit the question back to log({1-{a}),through this at least we are able to add data sets.
