Filter Last Value based on the max/lastdate and sum the correct total

[mcinnisbr]

Hi.
I have a survey input table where, evetually, the same customers will submit the most recent count of a required value. I'm able to filter out previous submissions to display the most recent count based on MAX/ last date.  (Using either below measures).  However, i'd like the total column to also sum up the values for the most recent MAX/;last date.  The totals row is showing the most recent MAX value as the total (9) in my table view, but i'd like to see (31) if possible.  Not sure if i'm doing this the correct way. Help?

LastestDate = CALCULATE (

SUM ( 'table'[customer current count]),

FILTER ( ALL ( 'table' ), 'table'[Start time] = MAX('table'[Start time] ) ),

VALUES ('testdata-w-data'[What VAW agency are you reporting for?])

)

or 

Lastestdate =

CALCULATE(

SUM('table' [customer current count]),

FILTER ( ALL ( 'table' ), 'table'[Start time] = MAX('table'[Start time] )))

[wdx223_Daniel · Accepted solution]

@mcinnisbr adding a sumx function to iterate the fields in the rows.

 try this code

Lastestdate =
SUMX(VALUES('table'[CustomerName]),
VAR _MaxDate=CALCULATE(MAX('table'[Start time] ))
RETURN
CALCULATE(
SUM('table' [customer current count]),
FILTER ( ALL ( 'table' ), 'table'[Start time] = _MaxDate )))

[mcinnisbr]

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