radiobuttonlist.selectedindex returning 0

Hi.


I have a series of radio button lists


<td align="center">
                <asp:RadioButtonList ID="rblPrefer02"  runat="server" RepeatLayout="Table"
                     CellSpacing="5" RepeatDirection="Horizontal" Width="100%" >
                    <asp:ListItem></asp:ListItem>
                    <asp:ListItem></asp:ListItem>
                    <asp: ...