Convert numbers to English words [closed]

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REM  *****  BASIC  *****
Option Explicit

Sub Main
  Print getAmountInWords("999999999.99")
End Sub


'********************************************************************************************************
'Function Name      :   getAmountInWords
'Description        :   To convert the Amount value into words(formatted as "000000000.00")
'                       (Maximum allowed limit 999999999.99)
'Input Parameters   :   Amount
'Returns            :   String
'Creat by           :   Sanjeev Meher on 9th Feb 2013
'Specific Logic used:   None
'********************************************************************************************************
Public Function getAmountInWords(strAmount As String) As String
    Dim strIntPart          As String
    Dim strDecPart          As String
    Dim strCroresPart       As String
    Dim strLakhsPart        As String
    Dim strThousandsPart    As String
    Dim strHundredsPart     As String
    Dim strTensPart         As String
    Dim strOnesPart         As String
    Dim strDecTensPart      As String
    Dim strDecOnesPart      As String
    Dim strAmtWords         As String
    Dim dblIntPart          As Double
    Dim intDecPart          As Integer
    Dim strDecWords         As String
    Dim iErr As Integer

    'handle for typemismatch error
    '??Err.Clear
    '??On Error Resume Next
    On Error Goto BadError
    strAmount = CDbl(strAmount)
    '??If Err.Number = "13" Then
    '??    getAmountInWords = ""
    '??    Exit Function
    '??End If
    '??Err.Clear
    strAmount = Format(Trim(strAmount), "000000000.00")

    'if the value is negative,zero above the limit then give error message
    If Val(strAmount) < 0 Then
        getAmountInWords = ""
        Exit Function
    ElseIf Val(strAmount) = 0 Then
        getAmountInWords = "Rupees Zero"
        Exit Function
    ElseIf Val(strAmount) > 999999999.99 Then
        getAmountInWords = ""
        Exit Function
    End If

    'store the integer and decimal parts separately
    strIntPart = Mid(strAmount, 1, 9)
    strDecPart = Mid(strAmount, 11, 2)

    'store the individual places in variables
    strCroresPart = Mid(strIntPart, 1, 2)
    strLakhsPart = Mid(strIntPart, 3, 2)
    strThousandsPart = Mid(strIntPart, 5, 2)
    strHundredsPart = Mid(strIntPart, 7, 1)
    strTensPart = Mid(strIntPart, 8, 1)
    strOnesPart = Mid(strIntPart, 9, 1)
    strDecTensPart = Mid(strDecPart, 1, 1)
    strDecOnesPart = Mid(strDecPart, 2, 1)

    strAmtWords = ""
    'To make the Crores Part
    If Val(strCroresPart) <> 0 Then
        strAmtWords = strAmtWords & getCroresPart(strCroresPart)
    End If

    'To make the Lakhs Part
    If Val(strLakhsPart) <> 0 Then
        strAmtWords = strAmtWords & getLakhsPart(strLakhsPart)
    End If

    'To make the Thousands Part
    If Val(strThousandsPart) <> 0 Then
        strAmtWords = strAmtWords & getThousandsPart(strThousandsPart)
    End If

    'To make the hundreds Part
    If Val(strHundredsPart) <> 0 Then
        strAmtWords = strAmtWords & getOnesColumn(Format(strHundredsPart, "00")) & " Hundred "
    End If

    'To make Tens and Ones part
    If Val(strTensPart & strOnesPart) <> 0 And Val(strAmount) > 100 Then
        strAmtWords = strAmtWords & "and " & getTensOnesPart(strAmount, strTensPart, strOnesPart)
    Else
        strAmtWords = strAmtWords & getTensOnesPart(strAmount, strTensPart, strOnesPart)
    End If

    strDecWords = ""
    'To make Tens and Ones part in the decimal part
    If Val(strDecTensPart & strDecOnesPart) <> 0 Then
        strDecWords = strDecWords & getTensOnesPart(Val(strAmount), strDecTensPart, strDecOnesPart)
    End If

    'If both integer and decimal part are not Zero then add Rupees and Paise only
    If Val ...