Problem Passing Variables via ObjectDataSource

[raphael232]

This is an update on my original post, after a little research i have descovered that pass a variable number of parameters into a method/function you use ParamArray, ie:

Public Function UpdateDocument(ByVal title As String, ByVal documentID As Integer, ByVal ParamArray list As Object()) As Boolean
        DocumentsAdapter.Update(title, documentID)

        ' handle additional parameters

        Return True
    End Function

In my web form page i have:

<asp:DetailsView ID="DetailsView1" runat="server" DataSourceID="ObjectDataSource1"
        Height="50px" Width="125px">
        <Fields>
            <asp:CommandField ShowEditButton="True" />
        </Fields>
    </asp:DetailsView>
    <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" DeleteMethod="DeleteDocument"
        InsertMethod="InsertDocument" OldValuesParameterFormatString="original_{0}" SelectMethod="GetDocumentByID"
        TypeName="DocumentManager" UpdateMethod="UpdateDocument">
        <DeleteParameters>
            <asp:Parameter Name="documentID" Type="Int32" />
        </DeleteParameters>
        <UpdateParameters>
            <asp:Parameter Name="title" Type="String" />
            <asp:Parameter Name="documentID" Type="Int32" />
        </UpdateParameters>
        <SelectParameters>
            <asp:QueryStringParameter DefaultValue="1" Name="documentID" QueryStringField="ID"
                Type="Int32" />
        </SelectParameters>
        <InsertParameters>
            <asp:Parameter Name="title" Type="String" />
        </InsertParameters>
    </asp:ObjectDataSource>

and when i run the application my title appears, along with any additional attributes which are sent in the getDocumentByID method but when i edit the record i recieve the following error:

ObjectDataSource 'ObjectDataSource1' could not find a non-generic method 'UpdateDocument' that has parameters: title, documentID, Attribute 1, Attributes 2.

I'm sure it's something trivial i'm missing. Appreciate your help. Thanks