I have created a pipeline in Azure Machine Learning that includes a Math Operation (natural logarithm of a column named charges). The next pill to the Math Operation is Select Column in Dataset. Since the pipeline has not ben submitted and run I cannot access the column ln(charges) in the pill Select Column in Dataset. My problem is that if I submit it I am able to run it and see the results in the pipeline once completed, but I have found no way of accessing those results (and thus the ln(charges) column in Designer.
UPDATE:
I have found a workaround. Still in designer the column ln(charges) is not selectable but if I manually enter Ln(charges) in the select column fields it works.











