I have to do the following
If i select Mar , then all the 3 columns should be added , if I choose Fen then the two columns. Meaning the cummulative is dynamic based on month selected
Customer Jan Feb Mar
ACME 12300 9700 19400
Bluestar 5000 2700 9100
Gentech 18500 23700 31250
Inversys 0 16450...