Analysis service Tabular Model Rolling the values

Hi
Help me anyone,
I Have to calculate for 1 Year rolling values from current date 
example let say i am in march-2014   i have to rolling my column values for 1 year means April-2013 
For this what function should i use 
and also one more thing I have a string values in my column like
Status
Active
Seperated
Active
Seperated
Resigned
Resigned
Abscond
Abscond 
I need to apply 1 year rolling formula on this column 
how should i get these total count  for 1 year rolling
Please help me on that 
Please reply me soon
Sreeni
Sreeni

Hi Screeni,
In your scenario, you can to calculate for 1 Year rolling values from current date, right? In MDX, we can calculate it using Lag and ClosingPeriod function, here is a sample query for your reference.
WITH MEMBER [Measures].[Last 12 Mth Order Count] AS
SUM(
ClosingPeriod([Date].[Calendar].[Month], [Date].[Calendar].[All Periods]).Lag(12)
: ClosingPeriod([Date].[Calendar].[Month], [Date].[Calendar].[All Periods])
, [Measures].[Order Count]
SELECT [Measures].[Last 12 Mth Order Count] ON 0
FROM [Adventure Works]
Reference
Lag (MDX)
ClosingPeriod (MDX)
Regards,
Charlie Liao
TechNet Community Support

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