Object being passed using webmethod, loses some values, but not all

I'll try to explain everything clearly.

when calling a webmethod

[WebMethod]
public Profile synchronize(string MID, DeviceUploadData data)

The object DeviceUploadData has many properties, and a few of them are array's. My question is about the array specifically. It loses it's value once it's received on the webmethod end.

This is the property inside DeviceUploadData

Private 开发者_如何学Pythondata() As DataObject
Public Property Data() As DataObject()
    Get
        Return Me.data
    End Get
    Set(value As DataObject())
        Me.data = value
    End Set
End Property

This is the DataObject object inside

 <System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "4.0.30319.225"), _
         System.SerializableAttribute(), _
         System.Diagnostics.DebuggerStepThroughAttribute(), _
         System.ComponentModel.DesignerCategoryAttribute("code"), _
         System.Xml.Serialization.XmlTypeAttribute([Namespace]:="http://somethingsomething")> _
        Public Class DataObject
            Dim _calories As Double
            Public Property Calories() As Double
                Get
                    Return _calories
                End Get
                Set(value As Double)
                    _calories = value
                End Set
            End Property
End Class

This is the DeviceUploadData object on the webmethod end

public class DataObject
    {
        private List<DataObject> _data;
        public List<DataObject> data
        {
            get { return _data; }
            set { _data = value; }
        }
}

This is the DataObject on the webmethod end

public class DataObject
    {
        #region class variables
        double _calories;
        public double Calories
        {
            get { return _calories; }
            set { _calories = value; }
        }
}

So the DataObject is populated with data, then once passed, on the other end, some of the DataObject properties are no longer populated. I haven't included the other properties in this example.

Solved it! All parameters and methods have to named exactly the same in the client and web object.

I guess it would be hard to see in my example since I've labled them the same.

Hope this helps some people out there.