Extjs 4 - Te whakakotahi i nga pou tukutuku e rua

He taatai ​​taku me te tukutuku. Kei te tarai ahau ki te whakaputa i tetahi pou hou e kiia ana ko te Ingoa Katoa hei whakakotahi i nga waahanga e rua. Ka roa ana e wa ana ki te rangahau i tenei take, ka mohio au ka taea pea he kaiwhakawhiwhi (taumata tukutuku) he pou ritenga ranei i te taatai ​​(whakamahere?).

Ka taea e tetahi te whakawhiwhi i tetahi tauira waehere hei whakamahi i taua pou?

// XML
<person>
    <first_name>John</first_name>
    <last_name>Smith</last_name>
</person> 

// Store
Ext.create('Ext.data.Store', {
    autoLoad: true,
    storeId: 'TestStore',
    fields: ['first_name', 'last_name'],
    data: parsed_xml_object,
    proxy: {
        type: 'memory',
        reader: {
            type: 'xml',
            record: 'person'
        }
    }
});

// Grid
TestGrid = Ext.create('Ext.grid.Panel', {
    title: 'Test',
    store: Ext.data.StoreManager.lookup('TestStore'),
    columns: [
        { header: 'First Name', dataIndex: 'first_name' },
        { header: 'Last Name Name', dataIndex: 'last_name' },
     ],
    height: 200,
    autowidth: true
});