I have a html page having a div `id="grid-example"`.

I referred a js file contains as following code

```
Ext.onReady(function () {

var myData = [
    ['3m Co', 71.72, 0.02, 0.03, '9/1 12:00am'],
    ['Alcoa Inc', 29.01, 0.42, 1.47, '9/1 12:00am'],
    ['Altria Group Inc', 83.81, 0.28, 0.34, '9/1 12:00am'],
    ['American Express Company', 52.55, 0.01, 0.02, '9/1 12:00am'],
    ['American International Group, Inc.', 64.13, 0.31, 0.49, '9/1 12:00am'],
    ['AT&T Inc.', 31.61, -0.48, -1.54, '9/1 12:00am'],
    ['Boeing Co.', 75.43, 0.53, 0.71, '9/1 12:00am'],
    ['Caterpillar Inc.', 67.27, 0.92, 1.39, '9/1 12:00am'],
    ['Citigroup, Inc.', 49.37, 0.02, 0.04, '9/1 12:00am'],
    ['E.I. du Pont de Nemours and Company', 40.48, 0.51, 1.28, '9/1 12:00am'],
    ['Exxon Mobil Corp', 68.1, -0.43, -0.64, '9/1 12:00am'],
    ['General Electric Company', 34.14, -0.08, -0.23, '9/1 12:00am'],
    ['General Motors Corporation', 30.27, 1.09, 3.74, '9/1 12:00am'],
    ['Hewlett-Packard Co.', 36.53, -0.03, -0.08, '9/1 12:00am'],
    ['Honeywell Intl Inc', 38.77, 0.05, 0.13, '9/1 12:00am'],
    ['Intel Corporation', 19.88, 0.31, 1.58, '9/1 12:00am'],
    ['International Business Machines', 81.41, 0.44, 0.54, '9/1 12:00am'],
    ['Johnson & Johnson', 64.72, 0.06, 0.09, '9/1 12:00am'],
    ['JP Morgan & Chase & Co', 45.73, 0.07, 0.15, '9/1 12:00am'],
    ['McDonald\'s Corporation', 36.76, 0.86, 2.40, '9/1 12:00am'],
    ['Verizon Communications', 35.57, 0.39, 1.11, '9/1 12:00am']

];

// create the data store
var store = Ext.create('Ext.data.ArrayStore', {

    fields: [
       { name: 'company' },
       { name: 'price', type: 'float' },
       { name: 'change', type: 'float' },
       { name: 'pctChange', type: 'float' },
       { name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}
    ],
   data: myData

});

// create the Grid
//var pluginExpanded = true;
var grid = Ext.create('Ext.grid.Panel', {
    store: store,
    stateful: true,
    stateId: 'stateGrid',

    columns: [
        {
            text: 'Company',
            flex: 1,
            sortable: true,
            dataIndex: 'company'
        },

        {
            text: 'Price',
            width: 75,
            sortable: true,
            //renderer: 'usMoney',
            dataIndex: 'price',
            menuDisabled: true //it will show/hide menu for sorting.

        },

        {
            text: 'Change',
            width: 75,
            sortable: true,
            dataIndex: 'change',
            menuDisabled: true //it will show/hide menu for sorting.
        },

        {
            text: '% Change',
            width: 75,
            sortable: true,
            dataIndex: 'pctChange'
        },

        {
            text: 'Last Updated',
            width: 185,
            sortable: true,
            renderer: Ext.util.Format.dateRenderer("d/M/yy"),
            dataIndex: 'lastChange'
        },

    ],

        bbar: Ext.create('Ext.PagingToolbar', {
            store: store,
            pageSize: 5,              
            displayInfo: true,
            displayMsg: 'Displaying topics {0} - {1} of {2}',
            emptyMsg: "No topics to display"

        }),

    height: 550,
    width: 600,
    title: 'Array Grid',
    renderTo: 'grid-example',
    viewConfig: {
    stripeRows: true

    }
});

});

```

I am getting the grid but paging is not working...please help me.`
I want no. of rows should be 5 per page.