Android Code Snippet [B4X] Lakh format number

'Converts the specified number to a string in "Lakh" format.
'The string will include at least Minimum Integers and at most Maximum Fractions digits.
'Example:
'Log(NumberFormatLakh(123456.6789, 0, 2)) '"1,23,456.68"
'Log(NumberFormatLakh(123456, 7 ,0)) '"01,23,456"
Public Sub NumberFormatLakh(Number As Double, MinimumIntegers As Int, MaximumFractions As Int) As String
    Dim value() As String = Regex.Split("\.",SetFormmatter(Number, MinimumIntegers, MaximumFractions))
    Dim sb As StringBuilder
    sb.Initialize
    Dim sw As Boolean
    For i = value(0).Length - 1 To 0 Step - 1
        If (sb.ToString.Length < 3) Then
            sb.Append(value(0).CharAt(i))
            Continue
        End If
        If Not(sw Or value(0).CharAt(i) = "-") Then
            sb.Append(",").append(value(0).CharAt(i))
            sw = True
        Else
            sb.append(value(0).CharAt(i))
            sw = False
        End If
    Next
    Dim result As StringBuilder
    result.Initialize
    For i = sb.Length - 1 To 0 Step - 1
        result.Append(sb.ToString.CharAt(i))
    Next
    If value.Length > 1 Then
        result.Append(".").Append(value(1))
    End If
    Return result
End Sub

Public Sub SetFormmatter(iNumber As Double, iMinimumIntegers As Int, iMaximumFractions As Int) As String
    Dim Formatter As B4XFormatter
    Formatter.Initialize
    Formatter.GetDefaultFormat.GroupingCharacter = ""
    Formatter.GetDefaultFormat.DecimalPoint = "."
    Formatter.GetDefaultFormat.MinimumIntegers  = iMinimumIntegers
    Formatter.GetDefaultFormat.MaximumFractions = iMaximumFractions
    Formatter.GetDefaultFormat.MinimumFractions = iMaximumFractions
    Formatter.GetDefaultFormat.FractionPaddingChar = "0"
    Return Formatter.Format(iNumber)
End Sub