I've tried all combinations I can think of... with no luck.
Here's vb code that will do it;

Dim ws As New LifetracWS.PatientDataService

Dim clientCall As New LifetracWS.OP_ReceiveLifetracData

clientCall.username = "gd"                             
clientCall.password = "gd"
clientCall.lifetracXMLString = “exact XML String from your sample message”

MessageBox.Show(ws.OP_ReceiveLifetracData(clientCall).result)

Is there a way to do this in vfp? If not, what should I be sending this method? Can you give me some idea of the layout?

>Hi,
>
>>>
>

>x = loPatientDataIFPort.OP_ReceiveLifetracData('gd','gd',lcPatientXml)
>

>I am still getting the error... can you look at this WSDL and see if I am missing something?
>
>http://nybf01-al-n002.buffalo.gd-ais.com:8080/lifetrac/insert?WSDL
>>>
>
>The WSDL indicates that the method only accepts one parameter (a complex type). You may have to package this yourself in VFP. Maybe something like:
>

>lcParam = "<username>gd</username><password>gd</password><lifetracXMLString>" ;
>+ lcPatientXML + "</lifetracString>"
>x = loPatientDataIFPort.OP_ReceiveLifetracData(lcParam)
>

>
>HTH,
>Viv