[:'(]Interesting &<asp:SessionParameter Name=dtdate1 SessionField=dtdate1 Type=DateTime/&>

    <asp:SqlDataSource ID="SqlDataSource1" runat="server"
    ConnectionString="<%$ ConnectionStrings:Ales %>"
     SelectCommand="Select * From HSeason"
    >
        <SelectParameters>
            <asp:SessionParameter Name="hotelID"  SessionField="hotelID"/>
           <asp:SessionParameter Name="dtdate1" SessionField="dtdate1"  Type="DateTime"/>
           
        </SelectParameters>
    </asp:SqlDataSource>
    
    <asp:GridView ID="GridView1"  DataSourceID="SqlDataSource1" runat="server">
    </asp:GridView>

When I delete
<asp:SessionParameter Name="dtdate1" SessionField="dtdate1"  Type="DateTime"/>
everythig works I am defining
protected void Page_Load(object sender, EventArgs e)
    {
        Session["hotelID"] = "1";
        Session["dtdate_1"] = DateTime.Now;
    }
What could be the problem the datetime session just doesnt work??? Even when I dont use it at all in SelectCommand