filtering dropdown list in combo box doesn't work when loading remote data

[mangrar]

Hi all. I've created some ComboBox that load remote data. The data is loaded but when I type something the dropDown list filtering doesn't work:

myCombo= new Ext.form.ComboBox({
fieldLabel: 'Centro',
store: myRemoteStore,
displayField:'nombre',
emptyText:'Seleccione centro ...',
width:250,
typeAhead: true,
triggerAction: 'all'
});

I've been doing some tests, and it seems that filtering only works when mode is set to 'local', but I can do this because my data is remote. Is there anyway to do local filtering loading remote data??

Thanks.