Android Question DropBoxOAuth2 Initialize in b4a. Set ClientSecret

dpx.Initialize(Me, "dpx", Appkey, "account_info.read account_info.write contacts.write file_requests.read file_requests.write files.content.read files.content.write files.metadata.read files.metadata.write sharing.read sharing.write", AppSecret,  File.DirData("Dropbox"))

#If B4J
Public Sub Initialize (Target As Object, EventName As String, ClientId As String, scope As String, ClientSecret As String, DataFolder As String)
#Else
Public Sub Initialize (Target As Object, EventName As String, ClientId As String, Scope As String)
#End If
    evModule = Target
    evName = EventName
    mClientId = ClientId
    mScope = Scope
    #if B4A
        packageName = Application.PackageName
        TokenFolder = File.DirInternal
    #Else If B4i
        TokenFolder = File.DirLibrary
        packageName = GetPackageName
    #Else If B4J
        TokenFolder = DataFolder
        mClientSecret = ClientSecret
    #End If
    If File.Exists(TokenFolder, TokenFile) Then
        Dim raf As RandomAccessFile
        raf.Initialize(TokenFolder, TokenFile, True)
        ti = raf.ReadB4XObject(raf.CurrentPosition)
        raf.Close
    End If
End Sub