Android Question How can i poststring with parameters

    Dim Subscriptiondetailsm As Map
    Subscriptiondetailsm.Initialize
    Subscriptiondetailsm.put("account","Father")
    Subscriptiondetailsm.put("Phone","0782911364")

    Dim json As JSONGenerator
    json.Initialize(Subscriptiondetailsm)
    Dim contentr As String = json.ToString
    'Depends on okHttputils library
    Dim clientb As HttpJob
    clientb.Initialize("",Me)
    clientb.PostString("http://192.168.1.205/KABOJJAAPPAPI/api/HandlerVBLoadterm/GetCustomersJSON/0782911364/Father",contentr)
    clientb.GetRequest.SetContentType("application/json")    'set the header as json
    clientb.GetRequest.SetContentEncoding("UTF8")
        
    Wait For Jobdone(clientb As HttpJob)

    If clientb.Success Then
        Dim Resultd As String = clientb.GetString
        Dim data As JSONParser
        data.Initialize(Resultd)
        Log(Resultd)
        'Dim product As Map = data.NextObject
        Else
        Log(Resultd)
    End If

Error evaluating expression.

Sub DownloadQuote
   Dim j As HttpJob
   j.Initialize("", Me) 'name is empty as it is no longer needed
   j.Download("http://quotesondesign.com/wp-json/posts?filter[orderby]=rand")
   Wait For (j) JobDone(j As HttpJob)
   If j.Success Then
     'The result is a json string. We parse it and log the fields.
     Dim jp As JSONParser
     jp.Initialize(j.GetString)
     Dim quotes As List = jp.NextArray
     For Each quot As Map In quotes
       Log("Title: " & quot.Get("title"))
       Log("Content: " & quot.Get("content"))
     Next
   End If
   j.Release
End Sub