var mystore = Ext.create('Ext.data.JsonStore', {

            fields: [

                {name: 'name', type: 'date', dateFormat: 'Y-m-d H:i:s'},

                 'value'

            ],

            data: [

                {"name":"2014-02-18 12:10:00","value":1567.98},

                {"name":"2014-02-18 12:15:00","value":1667.11},

                {"name":"2014-02-18 12:20:00","value":1708.76},

                {"name":"2014-02-18 12:25:00","value":1622.98},

                {"name":"2014-02-18 12:30:00","value":1615.35},

                {"name":"2014-02-18 12:35:00","value":1652.07},

                {"name":"2014-02-18 12:40:00","value":1706.75},

                {"name":"2014-02-18 12:45:00","value":1688.16},

                {"name":"2014-02-18 12:50:00","value":1766.28},

                {"name":"2014-02-18 12:55:00","value":1811.68},

                {"name":"2014-02-18 13:00:00","value":1786.61},

                {"name":"2014-02-18 13:05:00","value":1759.81},

                {"name":"2014-02-18 13:10:00","value":1721.8}

            ]

        });

        Ext.Ajax.request({

            url: this.myurl,

            async: false,

            params: {

                argu: this.myargu

            },

            success : function(response) {

                var json = Ext.JSON.decode(response.responseText);

                mystore.loadData(json.datas);

               &nbs