cannot reach label inside repeater

Hi all,
I want to know how I can reach my label inside my repeater.
I try in pageload like this but it is not recognized:  
LblCur3.Text =

<asp:Repeater ID="rptShoppingCart" runat="server"> <ItemTemplate> <div class="SCItem" runat=server> <div id="rightColum" runat="server" class="rightColum" runat=server> <div id="quantity" style="border:solid white 1px;" runat="server" class="quantity"> <div id="divform" runat="server"> QTY. <asp:TextBox ID="txtQuantity" size="4" value="0" runat="server" Text='<%# Eval("quantity") %>' /> ...