Count of Closed Tasks

[Daxtothemax]

I'm looking for a DAX formula to count when a task changes from Open to Closed.  I only need the task to be counted Closed once on the day it was closed.  The closed tasks will remaining in the data set.  Example data below, any help is greatly appreciated!

[Greg_Deckler · Accepted solution]

@Daxtothemax That's because I wrote it with a syntax error apparently:

VAR __MinClosedDate = MINX(FILTER('Table',[Task] = __Task && [Status] = "Closed"),[Date])

[Greg_Deckler]

@Daxtothemax Try something like:

Count of Closed Column =
  VAR __Task = [Task]
  VAR __Date = [Date]
  VAR __Status = [Status]
  VAR __MinClosedDate = MINX(FILTER('Table',[Task] = __Task) && [Status] = "Closed"),[Date])
RETURN
  IF(__Date = __MinClosedDate && [Status] = "Closed",1,BLANK())

[Daxtothemax]

Thank you for the response @Greg_Deckler .  I'm getting an error on this part for some reason. 

VAR __MinClosedDate = MINX(FILTER('Table',[Task] = __Task) && [Status] = "Closed"),[Date])

Any ideas why this would occur?