Only a couple of final things to solve based on the previous expression:
1. How can I exclude cases with a charge with zero value? I explain it better, suppose the charges: 'Promotional three months free' and 'Promotional free 3 months' are equal to zero, I would like to exclude those cases.
Although the amount is repeated and the charges are different, when they are equal to zero they have no risk
2. How can I count the cases in a KPI using a text box?