MDX Month to Date Comparitive

Hi folks,

I want to track cumulative Sales within a month, as a comparison for the same day of the same Month in previous Years.
So, 

I want the following:

Slicer (Filter) : Month of Year = [Date].[Months]
Rows : Day of Month = [Date].[Days]
Columns : Year = [Date].[Calendar].[Year]
Measure : SalesUnits-MonthToDate = [Measures].[Quantity]

Getting this with SalesUnits for each day is easy:

SELECT NON EMPTY
     {[Date].[Calendar].[Year].&[2014]:[Date].[Calendar].[Year].&[2016]} ON 0
   , {[Date].[Days].[Day Of Month]} ON 1
FROM [Sales]
WHERE [Date].[Months].&[8]

However, getting it for Cumulative Month to Date calculated values, is proving a little tricky.

WITH
MEMBER [Measures].[QtyMTD]
AS Aggregate (
      PeriodsToDate (
         [Date].[Calendar].[Month]
         ,[Date].[Calendar].CurrentMember
         )
      ,[Measures].[Quantity]
   )

SELECT NON EMPTY
     CROSSJOIN(
         {[Date].[Calendar].[Year].&[2014]:[Date].[Calendar].[Year].&[2016]}
       , {[Measures].[Quantity], [Measures].[QtyMTD]}
       )  ON 0
   , {[Date].[Days].[Day Of Month]} ON 1
FROM [Sales]
WHERE [Date].[Months].&[8]

My results are empty for QtyMTD, and I'm stumped.  In this query, I would expect to see another three columns for QtyMTD for 2014, 2015, 2016.  Any help would be greatly appreciated.




How would I do this?


So, I want the Green Data below, not the Blue Data 

Day	2014	2015	2016	Day	2014	2015	2016
1	336	20	0	1	336	20	0
2	0	0	842	2	336	20	842
3	0	1,199	300	3	336	1,219	1,142
4	402	2,593	1,693	4	738	3,812	2,835
5	3,396	981	1,905	5	4,134	4,793	4,740
6	2,329	2,488	0	6	6,463	7,281	4,740
7	1,825	3,602	0	7	8,288	10,883	4,740
8	917	0	2,486	8	9,205	10,883	7,226
9	393	0	0	9	9,598	10,883	7,226
10	-548	0	603	10	9,050	10,883	7,829
11	1,192	3,140	1,306	11	10,242	14,023	9,135
12	2,811	1,740	1,640	12	13,053	15,763	10,775
13	1,109	2,425	96	13	14,162	18,188	10,871
14	3,443	1,756	0	14	17,605	19,944	10,871
15	2,204	0	2,037	15	19,809	19,944	12,908
16	572	0	1,351	16	20,381	19,944	14,259
17	0	3,096	943	17	20,381	23,040	15,202
18	2,689	2,457	1,434	18	23,070	25,497	16,636
19	1,870	3,271	2,285	19	24,940	28,768	18,921
20	1,739	3,216	0	20	26,679	31,984	18,921
21	3,293	4,248	0	21	29,972	36,232	18,921
22	3,122	2,189	4,832	22	33,094	38,421	23,753
23	1,101	0	2,843	23	34,195	38,421	26,596
24	0	18	2,569	24	34,195	38,439	29,165
25	2,877	7,444	7,344	25	37,072	45,883	36,509
26	3,555	2,917	2,342	26	40,627	48,800	38,851
27	2,119	5,400	2,060	27	42,746	54,200	40,911
28	767	3,128	0	28	43,513	57,328	40,911
29	3,497	101	4,122	29	47,010	57,429	45,033
30	2,481	0	7,575	30	49,491	57,429	52,608
31	2,572	2,493	6,655	31	52,063	59,922	59,263

Heeeeelllllppp!


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Blue Peter