Pi Web Services and WebParts

So, I am trying to play around a little with Web Services (installed) and adding them to WebParts.  I have added the .wsdl file URL in the Web Service Data Sources in WebParts Admin, and that shows me PITimeSeriesService and numerous methods.  When I go to Web Service Datasets- I get errors each time I try to select a service method.  For example, when i try to select GetPIArchiveData I get the following error:

Unsupported parameter type 'PIArcDataRequest[]' (parameter'requests').

So my question is, what did I miss?  Shouldn't this work if all the methods are found in the previous section?