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Calculate true/false and date



I'm stuck at a DAX calculation. I need to calculate how many items are open in a column named "Closed". The open values have the status False. The value is linked to a field called "closuredate" and the date is set tot 31-12-9999. Example is below: 




How can i do this ? If i use the next dax i'll get the numbers in a table:

Openstaande meldingen = COUNTROWS(FILTER(Incident; Incident[closed] = FALSE()))
but when i use it in a visual and there is a date slicer it will return 0 because the closure date is 31-12-9999
Open meldingen.png
Who can help me to solve this issue.
Super User
Super User

HI @Anonymous ,


Which date column are you using in your slicer?





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Pragati Jain

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Not applicable

Hi Pragati11,


Im using the calldate (date of making) column in my slicer. 

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