B4J Question how to use bearer authentication on my own jServer

Sub Handle(req As ServletRequest, resp As ServletResponse)
    Dim bearer As String = req.GetHeader("Bearer") ' to check just a Bearer Header
    Dim authheadercomplete As String = req.GetHeader("Authorization") ' check authorizationheader
    ' and split authheadercomplete to have only the token afterwards...

    Dim j As HttpJob
    j.Initialize("",Me)
    j.Download2("http://192.168.192.121:8888/sendmsg", _
    Array As String("title", "the Title", "body", "this is the textbody","topic","general"))
    Dim token As String = "This is a dummystr used as a Token"
    j.GetRequest.SetHeader("Authorization","Bearer "&token )

    Dim bearerhdr As String = req.GetHeader("Authorization")
    If bearerhdr.Length > 7 Then
        Dim token As String = bearerhdr.SubString(7).Trim
        Log("Token from Auth-Header: "&token)
    End If