Unable to get subtotals

[FAA9]

Hi,
I am using DAX in excel report and I am unable to get subtotals in the yellow highlights cells in the screenshot below. The report shows no values for the subtotals. 
I tried using summarize and sumx but they didnt work either.

Since I cannot attach excel file here, I ll explain the dataset.
I have datatable for forecast and for stock on hand and a separate date table. These are being used to calculate the stock coverage in weeks. 
This cover is being weighted for each week and category for Route A & Route B, by multiplying the weekly forecast weighted for the full month.
I also must add that the weeks of cover dax doesnt include the date from the date table. Could that be the reason its not summing up the weeks cover at month level?

[JulienZH]

Try something like SUMX(VALUES([Year-Month]), [Stock cover in wks])

[FAA9]

Hi, Tried this, didnt work. Still see blanks

Also tried this, didnt work:
f( HASONEVALUE(tblDate[Year-Month]), [Wtd Stock Cover in wks],
SUMX(SUMMARIZE(Main_table, tblDate[Year-Month],Product[Route], Product[Mkt], Product[Category], "cover",[Wtd Stock Cover in wks]), [Wtd Stock Cover in wks) )

[mangaus1111]

Hi @FAA9 ,

I think that you have to use the Matrix visual, instead of the Table visual.

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