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Editorial Team
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Asked: 2026-05-23T05:27:03+00:00

I´m following this other Stack Overflow question , and was very enlightened, but when

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I´m following this other Stack Overflow question, and was very enlightened, but when I made a sanity check of the results I get this particular odd behavior in April, any rev_date of april yields a result of 0. I have tried different dates and rev_date and grid_date intervals, but the same thing occurs, Can I blame the system date configuration? what am I missing?

IMHO I would rather use the in-excel formulation instead the UDF, but this odd result is itching in my mind.

Screen of the testcase

using this UDF:

Public Function GRIDSALES(rev_date As Date, grid_date As Date) As Double

  Dim Team As Range
  Dim First_PD As Range
  Dim PAmount1 As Range

  Application.Volatile (True)

  Set PAmount1 = Sheets("Sheet1").Range("$F6:$F12")
  Set First_PD = Sheets("Sheet1").Range("$E6:$E12")
  Set Team = Sheets("Sheet1").Range("$D6:$D12")

            GRIDSALES = Application.WorksheetFunction.SumIfs( _
            PAmount1 _
            , Team, "<>9" _
            , First_PD, ">=" & Format$(rev_date, "dd mmm yyyy") _
            , First_PD, "<=" & Format$(Application.WorksheetFunction.EoMonth(grid_date, 0), "dd mmm yyyy"))

End Function
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1 Answer

  1. Editorial Team

    I followed what you had and I get the correct result. You are hard coding the date settings to “dd mmm yyyy”, which I have found when dealing with french settings, isn’t recognizable. Check your settings through the control panel for what regional settings you’ve got.
    Also, check your date mm/dd usage. Change the cell formatting to indicate the month name instead of ’05’. That way you can verify you aren’t reversing the days and months And every date really is a date.

    enter image description here

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