Hi, i've defined a mine proxy in this way

PHP Code:
Ext.define("CS.store.CustomStoreProxy",    {      
  
extend:"Ext.data.proxy.Ajax",       
 
alias'proxy.customstoreproxy',               
 
loaded:false,               
 
headers : {  'Content-type' 'application/json',  'accept''application/json' },       
...... 
I need to assign it an excpetion listener. Placing it into the object itself, all works fine, but my intent is to transfer all the logic to the controller.
So inside my controlelr i wrote

Code:
Ext.define('CS.controller.MainPanel', {   
 extend: 'Ext.app.Controller',   
 id: "MainPanel",     
 ....

 init: function() {

       this.control({
            "customstoreproxy": {
                    exception: function(proxy, options, response){  alert("ex")    }           
            }
     })
But the event never is fired... why ?