MDX Differing Daily\Weekly Aggregations - ssas

Question

I have a fact table that records time transactions for employees each day (numerous transactions per employee per day). We also have a daily target for each worker per day.
What I'm trying to calculate is whether for each worker per day they have met their daily target (if they have = 1 if they haven't = 0) and then at a daily\weekly\monthly level we want a count of workers who have hit their target.
So in my SSAS Cube I have created a calculated measure scoped at a worker per day using the following logic, which displays correctly when you view it at a worker per day level. However I'm unsure how I would tackle getting the day level to sum up that sub scope. In the example screen shot below (PLEASE CLICK IMAGE LINK AS I CANT CURRENTLY EMBED IMAGES) I would like the value at the Day level to be 2 (as drawn on the picture) as there are 2 people who have met their target for that day.
I'm on a bit of a steep learning curve with MDX at the moment, so this is hopefully something simple for seasoned MDXers :)
TIA
CALCULATE;
CREATE MEMBER CURRENTCUBE.[Measures].[TimesheetTargetMet] AS NULL
, ASSOCIATED_MEASURE_GROUP = 'Worker Targets';
SCOPE([Measures].[TimesheetTargetMet]);
SCOPE([Ledger Date].[Financial Date].[Financial Date].MEMBERS,[Worker].[Personnel Number].[Personnel Number].MEMBERS);
THIS = IIF([Measures].[Target Timesheet Hours] > 0 AND [Measures].[Hours] > [Measures].[Target Timesheet Hours], 1,0);
END SCOPE;
END SCOPE;
Timesheet Target Met

Answer 1

If you wrap with the SUM function does that help?
SUM(
(
[Ledger Date].[Financial Date].currentmember
,[Worker].[Personnel Number].currentmember
)
,IIF(
[Measures].[Target Timesheet Hours] > 0
AND
[Measures].[Hours] > [Measures].[Target Timesheet Hours]
,1
,NULL
)
)

Answer 2

The problem with your code is the calculated measure defined in the cube script as NULL because it has no aggregation.
To resolve try adding a new named calculation in the fact table in your datasource view with the expression: NULL
In your cube structure add the named calculation column as a real measure to your fact and chose as aggregation method SUM.
SCOPE([Measures].[Your Measure]);
SCOPE([Ledger Date].[Financial Date].[Financial Date].MEMBERS);
SCOPE([Worker].[Personnel Number].[Personnel Number].MEMBERS);
THIS = IIF([Measures].[Target Timesheet Hours] > 0 AND [Measures].[Hours] > [Measures].[Target Timesheet Hours], 1,0);
END SCOPE;
END SCOPE;
END SCOPE;

Answer 3

My first guess is:
CALCULATE;
CREATE MEMBER CURRENTCUBE.[Measures].[TimesheetTargetMet] AS
SUM(
NonEmpty(
existing [Ledger Date].[Financial Date].[Financial Date].Members * [Worker].[Personnel Number].[Personnel Number].Members,
[Measures].[Target Timesheet Hours]
),
IIF(
[Measures].[Hours] > [Measures].[Target Timesheet Hours],
1,
NULL
)
), ASSOCIATED_MEASURE_GROUP = 'Worker Targets';
However, it may appear to work slow with drill through selects.