Hello, here I think the problem is the name of the column.
‘Column1’ is a generic name, you should use the name of a column from Excel.
As I had tried to explain, can be also used the name of an Excel column Range
If the column name is “A”, you can use “A”. if is it “B”, then use “B”, and so on…
It gives an error because the column with the name ‘Column1’ doesn’t exist.
Since the Expression Editor makes an evaluation, then it throws an exception.
In the file Formula.xlsx, the formula can be get as a value from column “B”
In Result.xlsx must be set the Formula for cells “A”, “B”, and so on in row 2.
Hope it helps, Adrian