Count of Rows in a Card that contain a flag via Measure formula

[jwodecki]

I have a table of rows with an Id and a Year-Month stamp. I created 2 disconnected slicers, one for the year and one for the month.

I then created a Measure that will flag any row that contains the Year-Month selected within the slicer. There can be multiple stamps for each Id, which is why I cannot break out the Year and Month on it's own within the data table. 

When I create a Table visual, I can slice and dice with no issues. It gives me everything I need. The issue is I would like to use a Card visual so I can just get a count of how many Ids fall within each selection. Admittedly I am an Excel guy and am trying to learn BI. This one has me super confused. 

In the screenshot above, you can see I have 3 rows in the table, but the card shows a count of 12 (which is all rows). 

I attached some sample data hoping someone can assist. I expect there's some kind of sum/count formula I'm missing. I just don't know where or how to apply whatever it may be. 

Sample Data: https://www.dropbox.com/s/im9kg17v5y8n3b9/sample_data_bi.pbix?dl=0

First time posting, please let me know if there's a better way of sharing sample data. It wouldn't let me attach a .pbix to this post

[jwodecki · Accepted solution]

Figured this out by creating a Measure that references my initial Measure, and using that in the Card.

MQL Count =

CALCULATE(COUNTROWS('Lead'),FILTER('Lead','Lead'[Measure]>0))