Access VBA: SpellNumber Function

Please read the disclaimer below and then if you are happy to continue, copy the VBA code below into a module of your Access database application.

Option Compare Database
Option Explicit

 '****************
 ' Main Function *
 '****************
 Function SpellNumber(ByVal MyNumber, _
            Optional ByVal MyCurrency As String = "GBP") As String

 Dim Pounds, Pence, Temp
 Dim DecimalPlace, Count

 ReDim Place(9) As String
 Place(2) = " Thousand "
 Place(3) = " Million "
 Place(4) = " Billion "
 Place(5) = " Trillion "

 'Test for real value (number).
 If Not IsNumeric(MyNumber) Then
    SpellNumber = "Not Valid!"
    Exit Function
 End If

 ' String representation of amount.
 MyNumber = Trim(Str(MyNumber))

 ' Position of decimal place 0 if none.
 DecimalPlace = InStr(MyNumber, ".")

 ' Convert cents and set MyNumber to dollar amount.
 If DecimalPlace > 0 Then
    Pence = GetTens(Left(Mid(MyNumber, DecimalPlace + 1) & "00", 2))
    MyNumber = Trim(Left(MyNumber, DecimalPlace - 1))
 End If

 Count = 1
 Do While MyNumber <> ""
    Temp = GetHundreds(Right(MyNumber, 3))
    If Temp <> "" Then Pounds = Temp & Place(Count) & Pounds
    If Len(MyNumber) > 3 Then
       MyNumber = Left(MyNumber, Len(MyNumber) - 3)
    Else
       MyNumber = ""
    End If
 Count = Count + 1
 Loop

 Select Case Pounds
    Case ""
       Pounds = "No " & GetCurrencyNarrative(MyCurrency, True)
    Case "One"
      Pounds = "One " & Left(GetCurrencyNarrative(MyCurrency, True) _
          , Len(GetCurrencyNarrative(MyCurrency, True)) - 1)
    Case Else
       Pounds = Pounds & " " & GetCurrencyNarrative(MyCurrency, True)
 End Select

 Select Case Pence
    Case ""
       Pence = " and No " & GetCurrencyNarrative(MyCurrency, False)
    Case "One"
       Pence = " and One " & GetCurrencyNarrative(MyCurrency, False)
    Case Else
       Pence = " and " & Pence & " " & _
          GetCurrencyNarrative(MyCurrency, False)
 End Select

 SpellNumber = Pounds & Pence
 End Function

'*******************************************
 ' Converts a number from 100-999 into text *
 '*******************************************
 Private Function GetHundreds(ByVal MyNumber)
 Dim Result As String

 If Val(MyNumber) = 0 Then Exit Function

 MyNumber = Right("000" & MyNumber, 3)
 ' Convert the hundreds place.
 If Mid(MyNumber, 1, 1) <> "0" Then
    Result = GetDigit(Mid(MyNumber, 1, 1)) & " Hundred "
 End If

 ' Convert the tens and ones place.
 If Mid(MyNumber, 2, 1) <> "0" Then
    Result = Result & GetTens(Mid(MyNumber, 2))
 Else
    Result = Result & GetDigit(Mid(MyNumber, 3))
 End If

 GetHundreds = Result
 End Function

'*********************************************
 ' Converts a number from 10 to 99 into text. *
 '*********************************************
 Private Function GetTens(TensText)
 Dim Result As String
 Result = ""

 ' Null out the temporary function value.
 If Val(Left(TensText, 1)) = 1 Then
 ' If value between 10-19...
 Select Case Val(TensText)
    Case 10: Result = "Ten"
    Case 11: Result = "Eleven"
    Case 12: Result = "Twelve"
    Case 13: Result = "Thirteen"
    Case 14: Result = "Fourteen"
    Case 15: Result = "Fifteen"
    Case 16: Result = "Sixteen"
    Case 17: Result = "Seventeen"
    Case 18: Result = "Eighteen"
    Case 19: Result = "Nineteen"
    Case Else
 End Select
 Else
 ' If value between 20-99...
 Select Case Val(Left(TensText, 1))
    Case 2: Result = "Twenty "
    Case 3: Result = "Thirty "
    Case 4: Result = "Forty "
    Case 5: Result = "Fifty "
    Case 6: Result = "Sixty "
    Case 7: Result = "Seventy "
    Case 8: Result = "Eighty "
    Case 9: Result = "Ninety "
    Case Else
 End Select

 Result = Result & GetDigit(Right(TensText, 1))
 ' Retrieve ones place.
 End If

 GetTens = Result
 End Function

'*******************************************
 ' Converts a number from 1 to 9 into text. *
 '*******************************************
 Private Function GetDigit(Digit)
    Select Case Val(Digit)
       Case 1: GetDigit = "One"
       Case 2: GetDigit = "Two"
       Case 3: GetDigit = "Three"
       Case 4: GetDigit = "Four"
       Case 5: GetDigit = "Five"
       Case 6: GetDigit = "Six"
       Case 7: GetDigit = "Seven"
       Case 8: GetDigit = "Eight"
       Case 9: GetDigit = "Nine"
       Case Else: GetDigit = ""
    End Select
 End Function

'*******************************************
 ' Collects which currency narrative to show *
 '*******************************************
 Private Function GetCurrencyNarrative(CountryCode As String, _
                                           b As Boolean) As String
 'b is a flag of TRUE or FALSE that returns either "Pounds" (TRUE)
 'or "Pence" (FALSE) for GBP or "Dollars" or "Cents"
 'based on the country code.

    Select Case UCase(CountryCode)
       Case Is = "GBP"
           If b Then
              GetCurrencyNarrative = "Pounds"
           Else
              GetCurrencyNarrative = "Pence"
           End If
       Case Is = "USD"
           If b Then
               GetCurrencyNarrative = "Dollars"
           Else
               GetCurrencyNarrative = "Cents"
           End If
       Case Is = "EUR"
           If b Then
               GetCurrencyNarrative = "Euros"
           Else
               GetCurrencyNarrative = "Cents"
           End If
       'Case Is = ""
           '[add your own currencies here to expand the choice...]

       Case Else 'catch if the above is not working - default to...
           If b Then
              GetCurrencyNarrative = "Pounds"
           Else
              GetCurrencyNarrative = "Pence"
           End If
     End Select
End Function