Access variable from code behind in ASP server side control

Question

<asp:Menu ID="mnu" Orientation="Horizontal" runat="server" BorderStyle="Solid" Font-Names="Castellar" Font-Size="X-Small" ForeColor="#0066FF" RenderingMode="Table">

<Items>

<asp:MenuItem Text="Statement" Value="statmnt">

<asp:MenuItem Text="Balance" NavigateUrl="~/Balance.aspx?name=<%=uid %>"Target="showholder"></asp:MenuItem>

 

 

 

 

 

i need uid which is a variable declared public in code behind