Milli-seconds in Raw Date format

[rogrdat]

Hello,
I have a Date String which is formatted like : 2007-06-19 17:12:16.0

To the date formatter I would like to specify that raw data contains "milli seconds". However the date object doesn't seem to have milli-seconds.

Can someone help me?

Here is what I'm trying to do:
var ds = new Ext.data.Store({
proxy: new Ext.data.MemoryProxy(myData),
reader: new Ext.data.ArrayReader({}, [
{name: 'company'},
{name: 'lastChange', type: 'date', dateFormat: 'Y-m-d H:i:s.ms'}
])
});