i am not able to load data from store to List.
My Code
Code:
Ext.define('Contact', {
    extend: 'Ext.data.Model',
    config: {
       idProperty: 'CompanyCode',
    fields: [
        { name: 'CompanyCode', type: 'string' },
        { name: 'LastTradedPrice', type: 'string' },
        { name: 'PercentageDiff', type: 'string' },
        { name: 'FiftyTwoWeekHigh', type: 'string' },
        { name: 'FiftyTwoWeekLow', type: 'string' },
        { name: 'ChangePercent', type: 'string' },
        { name: 'Change', type: 'string' },
        { name: 'MarketCap', type: 'string' },
        { name: 'High', type: 'string' },
        { name: 'Low', type: 'string' },
        { name: 'PrevClose', type: 'string' },
        { name: 'OpenInterest', type: 'string' },
        { name: 'MarketLot', type: 'string' },
        { name: 'ChangeInOpenInterest', type: 'string' },
        { name: 'LastTradedTime', type: 'date', dateFormat: 'c' }
    ]
    }
});


var store = Ext.create('Ext.data.Store', {
     extend: ["Ext.data.proxy.JsonP"],
   model: Contact,
   sorters: 'CompanyCode',


   grouper: {
       groupFn: function(record) {
           return record.get('CompanyCode')[0];
       }
   },


   proxy : {
            type : 'jsonp',
            url : 'http://money.rediff.com/money1/current_status_new.php?companylist=17023928|17023929&id=1354690151&Rand=0.6305125835351646',
             callbackKey: 'callback',
            reader:{
                    type:'json',
                    rootProperty:''
                }
        }
});


Ext.create('Ext.List', {
   fullscreen: true,
   itemTpl: '<div class="contact">{CompanyCode} <strong>{LastTradedPrice}</strong></div>',
   store: store,
   grouped: true
});
Service Url
Code:
http://money.rediff.com/money1/current_status_new.php?companylist=17023928|17023929&id=1354690151&Rand=0.6305125835351646
Json Response
Code:
[{"CompanyCode":"17023928","LastTradedPrice":"19,406.69","Volume":"0","PercentageDiff":"-0.06","FiftyTwoWeekHigh":"19,612.18","FiftyTwoWeekLow":"15,358.02","LastTradedTime":"27 Dec,14:52:48","ChangePercent":"-0.06","Change":"-10.77","MarketCap":"0.00","High":"19,504.40","Low":"19,375.52","PrevClose":"19,417.46","OpenInterest":"","MarketLot":"","ChangeInOpenInterest":"","Symbol":null}]