MDX Queries - Compare Current Month with data from 2 months before

Problem: Creating SSRS report from Cube, I need to write MDX query to compare current month with previous 2 months figures

Solution used as below:

/* Using Lag function to calculate before 2 Months */

WITH MEMBER [Measures].[Previous 2 Months] AS

([Date].[Calendar Date].Lag(2), [Measures].[Total Sales Amount]), Format_String = "Currency"

SELECT

{ [Measures].[Total Sales Amount], [Measures].[Previous 2 Months]} on columns,

non empty [Date].[Calendar Date].[Month Name].Members on rows

FROM [Analysis Services Tutorial]