Autoloading - Ext.form.Panel

I am unable to autoload my php file when I'm creating my form panel. The php file grabs some data and also includes some html to be rendered with smarty. Is there a new method or config option that handles this?

Ext.create('Ext.form.Panel', {

renderTo: 'ctn_grid_window',

id: 'ctn_grid_window_window',

autoHeight: true,

layout: 'fit',

border: false,

bodyBorder: false,

bodyStyle: 'overflow:hidden',

autoLoad: {

url: '/php/file.php,

scripts: true

}

});

Autoloading - Ext.form.Panel