Treepanel SubmitNodes Event Extraparams

[children_of_the]

Hi,

I need help about treepanel.
There is a treepanel and a toolbar with 2 buttons.
These buttons both triggers treepanel's onsubmit event.
I need to set parameter so i can get these parameters from server side code and process as these parameters.

                    <ext:Button ID="Button1" runat="server" Text="Kaydet">
                        <Listeners>
                            <Click Handler="#{TreePanel1}.submitNodes();" />
                        </Listeners>
                    </ext:Button>
                    <ext:Button ID="Button2" runat="server" Text="Kaydet">
                        <Listeners>
                            <Click Handler="#{TreePanel1}.submitNodes();" />
                        </Listeners>
                    </ext:Button>

Server side Code:

    protected void SubmitNodes(object sender, SubmitEventArgs e)
    {
        X.Msg.Alert("Title", e.ExtraParams["Param1"]).Show();
    }

Thanks.