I am not to sure what it is you're trying to achieve?
Normally in a chart like this I would expect to see either all the monthly totals added up to the current month,
i.e. up to and including Nov 2015
The total of every month up to and including the month Selected i.e. month 11 for example?
Hi, if you need different field selections for each column I would use set analisys to specify those conditions.
The button can change a variable between 1 and 0 and using conditional expressiones based on this variable it will show the desired columns.
and a question, what if we are in Period 1? wich periods should be selected for year to date?none?