Hey,
I have an excel list with 3 columns, one contains the customers, the second the information whether they receive a newsletter or not and the third the sales that the customer has generated in the last month.
I want to evaluate the total sales of customers who receive a newsletter. (Here the answer should be 50)
I would like this value to be output in a variable so that I can continue to work with it later.
Can someone help me?
Best wishes