Greetings, I am using jsTree to generatate my hierarchical data. JsTree is generated as follows:

$(function() {
$("#industries").tree({
        data: {
            type: "json",
            opts: {
                url: "/Admin/GetIndustries/"
            }
        }
    });
});

it works find and the jsonresult is something like:

[{"attributes":[],"data":{"title":"Adwokaci, Notariusze","id":"1a051101-c3fa-48f2-b2e1-c60d1b67ea22"},"children":[{"attributes":[],"data":{"title":"Kancelarie adwokackie","id":"26d6cff1-3c7f-4a2f-bf5a-422e08127b43"

my question is: how can I save id of selected node in some hidden field? I do something like this:

<script type="text/javascript">
    $("#industries").click(function() {
        var tree = $.tree.reference("industries");
        var t = $.tree.focused(); if (t.selected) t.selected; else alert("Select a node first");
        alert(t.id);

    });

but it does not work. Can someone please help me?