ext combo

Ext.define('TUL.view.Unit' ,{

    extend: 'Ext.window.Window',
    alias: 'widget.unittul',
    title: 'All Users',
    title: '..::: Selamat Datang  :::..',
    layout: 'fit',
    height: '55%',
    width: '35%',
    closable: true,
    autoShow: true,
    initComponent: function() {
         this.items = [
            {
                        xtype: 'panel',
                        title: 'Search the Ext Forums',
                        width: 600,
                        bodyPadding: 10,
                        layout: 'anchor',
                        items:[{
                            xtype: 'combo',
                            store : 'Unit',
                            displayField: 'title',
                            emptyText:'Cari Unit',
                            minChars: 1,
                            value :'',
                            typeAhead: false,
                            hideLabel: true,
                            hideTrigger:true,
                            anchor: '100%',
                            name :'cari',
                            listConfig: {
                                loadingText: 'Searching...',
                                emptyText: '<b>Unit</b> yang anda cari tidak ada.',
                                // Custom rendering template for each item

                /*
                 //Ini kenapa datanya gak ke load
                 //padahal di response udah tampil*/
                                getInnerTpl: function() {
                                    return  '<div class="search-item">' +
                                            '<h3><span>{strkode_dealer}<br />by {strnama_dealer}</span>{strnama_dealer}</h3>' +
                                            '<h3>ID Unit : {intid_unit}</3><br>' +
                                            '<h4>Nama Unit : {strnama_unit}</h4></div>';
                                }


                            },
                            pageSize: 10,
                            // override default onSelect to do redirect
                            listeners: {
                                select: function(combo, selection) {
                                    var post = selection[0];
                    alert(post.get('strnama_unit'));
                                }
                            }
                        }]
            }
        ];
        this.buttons = [
            {
                text: 'Save',
                action: 'save'
            },
            {
                text: 'Cancel',
                scope: this,
                handler: this.close
            }
        ];
        this.callParent(arguments);
    }
});