Excel VBA : How to debug a user defined function (UDF)

The best way to debug a user defined function (UDF) is by writing a temporary Sub procedure that calls your function and then step into the Sub procedure by pressing F8 key.

Example :

Function grade(score As Single, score1 As Single) As String
         If score >= 75 And score1 >= 75 Then
         grade = "A"
         ElseIf score > 50 And score1 > 50 Then
         grade = "B"
         grade = "C"
         End If
End Function
Temporary Sub Procedure -

Sub test()
MsgBox grade(Range("A2").Value, Range("B2").Value)
End Sub

Next Step : Position your cursor before Sub test() and then press F8 key to step into the Sub Procedure.

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Deepanshu founded ListenData with a simple objective - Make analytics easy to understand and follow. He has over 7 years of experience in data science and predictive modeling. During his tenure, he has worked with global clients in various domains like banking, Telecom, HR and Health Insurance.

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2 Responses to "Excel VBA : How to debug a user defined function (UDF)"
  1. Perfect and simple solution. Thanks. Gary

  2. Thanks - this was helpful!


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