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07.23.2008 at 01:52PM PDT, ID: 23590160
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9.9

Access 2007 VBA XIRR Function Error

Asked by mgw08 in Access Coding/Macros

Tags:

I found the code below on an old post from the year 2000.  I'm an trying to input into my database but I receive a Run Time Error '13': Type Mismatch.  My thought is the syntax may be different in the different versions of Access, but I'm a newbie, so don't know...
On the debug it points to the line:  Set rstXIRR = dbs.openrecordset("TableXIRR", dbOpenDynaset).
Does anyone have any thoughts of what could generate the type mismatch error?
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Option Compare Database
 
Function XIRR(aXIRR As Variant, nRate As Double, nPayments As Integer) As Double
Dim i As Integer
XIRR = 0                                        ' residual of function
For i = 1 To nPayments
  XIRR = XIRR + aXIRR(i, 2) / (1 + nRate) ^ (aXIRR(i, 1) / 365)
Next i
 
End Function
 
Private Sub CommandRunXIRR_Click()
Dim dbs As Database
Dim rstXIRR As Recordset
Dim aXIRR() As Double
Dim nPayments As Integer
Dim dFirstPayDate As Date
Dim i As Integer, j As Integer
Dim nRate As Double, nLastRate As Double, nRateStep As Double
Dim nXIRR As Double
 
Dim nResidual As Double, nLastResidual As Double
 
 
Set dbs = CurrentDb
Set rstXIRR = dbs.OpenRecordset("TableXIRR", dbOpenDynaset)
 
nPayments = DCount("PayDate", "TableXIRR")
ReDim aXIRR(nPayments, 3)
dFirstPayDate = DMin("PayDate", "TableXIRR")
 
nRate = 0.1                                                                     ' initial guess
nRateStep = 0.1                                                              ' arbitrary guess
 
i = 1
With rstXIRR
While Not .EOF
  aXIRR(i, 1) = DateDiff("d", dFirstPayDate, !PayDate)
  aXIRR(i, 2) = !Payment
  i = i + 1
  .MoveNext
Wend
End With
 
 
nResidual = 10
nLastResidual = 1
nLastRate = nRate
i = 0
 
While i < 100 And Abs((nLastResidual - nResidual) / nLastResidual) > 10 ^ -8
nLastResidual = nResidual
nResidual = XIRR(aXIRR, nRate, nPayments)
nLastRate = nRate
If nResidual >= 0 Then
  nRate = nRate + nRateStep
Else
  nRateStep = nRateStep / 2
  nRate = nRate - nRateStep
End If
i = i + 1
Wend
 
nXIRR = nLastRate
 
Debug.Print "The internal rate of return is "; Format(nXIRR, "#.##%")
End Sub
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[+][-]07.23.2008 at 02:30PM PDT, ID: 22074100

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About this solution

Zone: Access Coding/Macros
Tags: Run Tim e Error '13': Type Mismatch
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Solution Provided By: peter57r
Participating Experts: 1
Solution Grade: A
 
 
 
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