Alternate states syntax

[#1]

Hi,

Could someone explain me the following syntax from the examples in getting started QV11?

num(Sum({[Group 1]<[Product Sub Group]=, Path = $::Path, Region = $::Region, Year = $::Year, Quarter = $::Quarter, Month = $::Month>} Sales)/1000, '#,##0')

and the corresponding one for the alternate state is

num(Sum({[Group 2]<[Product Sub Group]=, Path = $::Path, Region = $::Region, Year = $::Year, Quarter = $::Quarter, Month = $::Month>} Sales)/1000, '#,##0')

[Anonymous]

I am using following expression to calculate growth%

=Num(((sum({StateB<Year=$ Year,Month=$ Month>} [inv value] / Sales_INR_Unit) -

sum({StateA<Year=$ Year,Month=$ Month>} [inv value] / Sales_INR_Unit)) /

Sum({StateA<Year=$ Year,Month=$ Month>} [inv value] / Sales_INR_Unit) * 100),'#,##0.0')

But i am not getting the result.

I want to calculate growth% on basis of current selection ie(if users select 2016 as year from 1st multibox) and (if user selects 2017 as year from 2nd multibox) then growth% should be calculated on basis of user selection. I have also maintained state for three different Multi Boxes ie StateA(for 1st Miltibox ), StateB(for 2nd Multibox) and StateC(for #rd multibox)