Using DAX Measure for Categories against SSAS Direct Connection

I have seen several posts about creating Categories using DAX but I'm having difficulty using any of them against my SSAS connection.

I'm trying to create aging buckets and do a count of distinct values falling into each bucket.  So far, I've been able to create my aging buckets and view them in a table that contains each value.  The data is similar to the following:

I'd like to be able to display:

The problem seems to be putting the Buckets in the rows of the matrix.  In my situation using SSAS, I'm haven't found a way to create a table and use it.  (I'm not sure why other than it might have something to do with using a direct connection to the SSAS Tabular model.)

My Categories were created with the following:

Aging Buckets =
VAR Latest =
    MAXX ( 'Dimension1', 'Dimension1'[End Date] )
VAR Bucket =
    CALCULATE (
        IF (
            Latest,
            IF (
                HASONEVALUE ('Dimension1'[End Date]),
                SWITCH (
                    TRUE,
                    [NO of days] <= 0, "Past Due",
                    [NO of days] > 0
                        && [NO of days] <= 30, "One Month",
                    [NO of days] > 30
                        && [NO of days] <= 60, " Two Months",
                    [NO of days] > 60
                        && [NO of days] <= 90, " Three Month",
                    [NO of days] > 90
                        && [NO of days] <= 120, " Four Month",
                    "More Than 4 Months"
                )
            )
        )
    )
RETURN
    Bucket

Days past due:

NO of days = 
VAR TD = TODAY()
VAR ED = SELECTEDVALUE('Dimension1'[End Date])
RETURN
IF (TD < ED, DATEDIFF(TD,ED,DAY), DATEDIFF(ED,TD,DAY) * -1)

Count of Codes:

Aging Count = CALCULATE(COUNTAX('Dimension1','Dimension1'[Code]))

How do I use it in a matrix to group the aging counts by each bucket?

Thanks.