HI,
So you want to enter month range and then you want figures like your sample data. ..?
You need to restrict your KF1 with Month(Create a variable which replaces above range variable- TO Value)
Restrict your KF2 with above replacement variable with offset -1.
You may use my blog for creating replacement variable from a range variable(TO Value)
How to derive Calmonth, Calyear from Calday easily
Regards,
Suman