Hi All,
I have done a checkCombo i.e checkBoxes inside a combo.

The issue i am getting is , unable to make default select all .

I have done.(got the checkcombo from http://extjs.dariofilkovic.com/)
Code:
{  xtype : 'checkcombo',
                             valueField: 'region',
                             id : 'regionId',
                             displayField: 'region',
                             store: 'deliveryGroupPerformances.RegionStore',
                             addAllSelector: true,
                             action : 'selectRegion',
                             listeners: {
                                    afterrender: function(display){
                                        display.tip = Ext.create('Ext.tip.ToolTip', {
                                            target: display.el,
                                            trackMouse: true,
                                            dismissDelay: 5000
                                        });
                                    }
                                }
                                },
Coming like that as default
Screen shot 2012-11-29 at 4.56.25 PM.png
i want to do like that for default in render of the component

Screen shot 2012-11-29 at 4.56.36 PM.png