Hi Reynolds
I've tried the same as you mentioned but still it's the same case. I'm getting the same error. I want to understand one thing.. If I want to go with Cumulation's with period parameter as monthly, then how i must enter the dates in the system. do I need to create months every time for each calendar year??
like 01.01.2014,01.02.2014??? tell me what is the exact use of this..
Is there any other way to sort the Issue??
Await for ur valuable Inputs 
Cheers 
Pradyp