using VBA to find the very last used cell and use this cell ref in formula

Dear Experts:

Below is a rather simple formula which is filled into cell B4 by means of a macro.

Works just fine, but there is one thing I would like to get adjusted:

The second cell reference in this formula 'N42' is not fixed but dynamic.

It could be 'N42' in one case, in another computation case it is 'N17'.

The column letter stays the same but the row index can change. In all of the cases the dynamic cell reference is always the very last used cell in the column 'N' (Range("N65536").End(xlUp).Select))

So how should the below macro be tweaked to accommodate this requirement?

Help is much appreciated.  Thank you very much in advance. Regards, Andreas

Sub ShowDiscrepancies()

Dim strFormula As Variant

 strFormula = _
        "=IF(N2<>N42,""A total of "" & "" "" &N2-N42& "" Products have not been properly counted!"")"
ActiveWorkbook.Sheets("Results").Range("B4").Formula = strFormula

End Sub

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Andreas HermleTeam leaderAsked:
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MacroShadowConnect With a Mentor Commented:
This is the formula, please try inserting the formula directly in the cell, if it works we'll see where the vba version went bad.
=IF(N2<>INDIRECT(CONCATENATE("N",IF(ISERROR(MATCH(9E+99+306,N:N)),MATCH("*",N:N,-1),IF(ISERROR(MATCH("*",N:N,-1)),MATCH(9E+99+306,N:N),MAX(MATCH(9E+99+306,N:N),MATCH("*",N:N,-1)))))),"A total of "&" "&N2-INDIRECT(CONCATENATE("N",IF(ISERROR(MATCH(9E+99+306,N:N)),MATCH("*",N:N,-1),IF(ISERROR(MATCH("*",N:N,-1)),MATCH(9E+99+306,N:N),MAX(MATCH(9E+99+306,N:N),MATCH("*",N:N,-1))))))&" Products have not been properly counted!")

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MacroShadowCommented:
Does this do what you want:
Sub ShowDiscrepancies()

    Dim strFormula As Variant

    strFormula = _
    "=IF(N2<>INDIRECT(CONCATENATE(""N"",IF(ISERROR(MATCH(9E+99+306,N:N)),MATCH(""*"",N:N,-1),IF(ISERROR(MATCH(""*"",N:N,-1)),MATCH(9E+99+306,N:N),MAX(MATCH(9E+99+306,N:N),MATCH(" * ",N:N,-1)))))),""A total of ""&"" ""&N2-INDIRECT(CONCATENATE(""N"",IF(ISERROR(MATCH(9E+99+306,N:N)),MATCH(""*"",N:N,-1),IF(ISERROR(MATCH(""*"",N:N,-1)),MATCH(9E+99+306,N:N),MAX(MATCH(9E+99+306,N:N),MATCH(""*"",N:N,-1))))))&"" Products have not been properly counted!"")"
    ActiveWorkbook.Sheets("Results").Range("B4").Formula = strFormula

End Sub

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Andreas HermleTeam leaderAuthor Commented:
Dear MacroShadow,

first of all thank you very much for your swift and professional help.

wow what a formula, incredible, but I am afraid to tell you that the macro does not work. It throws an error message '13' Type mismatch.

Regards, Andreas
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Andreas HermleTeam leaderAuthor Commented:
Dear MacroShadow:

I will have a look at your solution tomorrow when I will be at my working place. There I got an English Excel Version.

In the meantime I found my own solution to my problem. Line 8 and 12 are the lines that did the trick for me. Nevertheless I will try out what you furnished.

Thank you very much again,

Andreas



Sub ShowDiscrepancies()
Dim x As String
Dim LastRow As Long
Dim strFormula As Variant
Dim strSheet As String

strSheet = ActiveWorkbook.Sheets("2_Auswertung").Name
LastRow = ActiveSheet.Range("N65000").End(xlUp).Row


strFormula = _
"=IF('" & strSheet & "'!$N$2<>$N$" & LastRow & ",'" & strSheet & "'!$N$2-$N$" & LastRow & "& "" Instrumente sind nicht mit Firmennamen versehen!"")"
ActiveWorkbook.Sheets("2_Auswertung").Range("R2").Formula = strFormula

End Sub

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Andreas HermleTeam leaderAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for AndreasHermle's comment #a40013279

for the following reason:

Hi MacroShadow:

great job, thank you very much for your great help. Works just wonderfully.

Regards, Andreas
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Andreas HermleTeam leaderAuthor Commented:
Uuuups, my fault, I was gonna accept MacroShadow's answer (40011220). I inadvertently graded my own question. I am really sorry.
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MacroShadowCommented:
Uuuups, my fault, I was gonna accept MacroShadow's answer (40011220). I inadvertently graded my own question. I am really sorry.
0
 
Andreas HermleTeam leaderAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for AndreasHermle's comment #a40013279

for the following reason:

Dear MacroShadow:

great job, works like a charm. Thank you very much for your great help.

Regards, Andreas
0
 
MacroShadowCommented:
Uuuups, my fault, I was gonna accept MacroShadow's answer (40011220). I inadvertently graded my own question. I am really sorry.

Dear MacroShadow:

great job, works like a charm. Thank you very much for your great help.

Regards, Andreas
0
 
Andreas HermleTeam leaderAuthor Commented:
Dear MacroShadow,

Finally my grade. Thank you very much for your great help. Works like a charm.

Regards, Andreas
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