Count measure based on a multiple selection slicer

[jdiruzza]

I am trying to create a measure that will give me the count of departments based on a multiple selection slicer.

The data:

Employee	Department
12345	5501
25466	5431
22334	9855
84725	5501

If the slicer was set to Dept 5501, the expected value would be 2
If the slicer was set to Dept 5501 & 5431 the expected value would be 3.

Can anyone assist with a measure for this?

Thanks!

[DOLEARY85 · Accepted solution]

Hi,

try: 

Measure 8 = calculate(count('Table (3)'[Employee]))

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