[Solved] Get the index selected in TabStrip, where this error?

[lucas]

...ClientEvents(events => events.OnSelect(() => {  %>
   function onSelect(e) {
           var item = $(e.item); 
           $("#Tab_Selected").val(item.index());
   }...

where #Tab_Selected is a hidden field

Controller in this hidden field comes empty, do not get the index you selected.