Android Question Error while try to send data with parameters

SendsmschatV2 - 451: ',' expected.

Dim j As HttpJob
            j.Initialize("", Me)
            j.PostString($"http://kccug.com/KabojjaApp/RecieveSMS.ashx?customerId=${act}&s=${edtMessage.Text}&d=${getdate(DateTime.Now)}&id=${NewID}&ph=${phone}&f=${sx}"$ )
            Wait For (j) JobDone(j As HttpJob)
            If j.Success Then
                Log(j.GetString)
            End If