Android Question how can concatenate this api

[Makumbi]

Please help me out

 Dim hold as string
dim kmsg as string
dim senderk as string
hold = ParentNo.Text
kmsg = Messagedata.Text
senderk = "KJS"

http://boxuganda.com/api.php?user=username&password=mypassord&sender=KJS&message=Good Morning &reciever=0702822227

 

[DonManfred]

    Dim j As HttpJob
    j.Initialize("",Me)
    j.Download2("http://boxuganda.com/api.php", _
    Array As String("user", "username", "password", "mypassword","sender", senderk, "message", "Good morning", "reciever","0702822227"))