POST request in VBA

Public Sub httpclient()
Dim xmlhttp As New MSXML2.XMLHTTP, myurl As String
myurl = "http://localhost:1234/call.php?apicall=registration.data&apiDataType=xml"
xmlhttp.Open "POST", myurl, False
xmlhttp.setRequestHeader "Content-Type", "application/x-www-form-urlencoded"
xmlhttp.Send "apikey=d8a40f77-69b5-4ef7-b554-d8f86382101c&cursor=MQ==&limit=1"
MsgBox (xmlhttp.responseText)
End Sub