Sencha 팝업 내용 html로 꾸미기

Ext.create('Ext.window.Window', {
    title: 'Line Information',
    modal: true,
    width: 300,
    height: 200,
    layout: 'fit',
    items: {
        xtype: 'panel',
        html: `
            <p><strong>Series Title:</strong> ${item.series.getTitle()}</p>
            <p><strong>Category:</strong> ${item.record.get('category')}</p>
            <p><strong>Value:</strong> ${item.record.get('value')}</p>
        `
    }
}).show();