How can i checked my checkboxes with the value in my store?

Code:
xtype: 'checkboxgroup',
            fieldLabel: '',
            columns:5,
            vertical: true,
            id:'idcheck'
            ,items: [{boxLabel: 'one', name: 'E[]', value:1},
            {boxLabel: 'two', name: 'E[]', value:2},
            {boxLabel: 'three', name: 'E[]', value:3}]