MODX Collections update TV from grid

collections.custom.js

collections.combo.TVNAME = function(config) {
    config = config || {};
    Ext.applyIf(config,{
        store: new Ext.data.SimpleStore({
            fields: ['v']
            ,data: [
                ['val1'],
                ['val2'],
                ['val3']
            ]
        })
        ,displayField: 'v'
        ,valueField: 'v'
        ,mode: 'local'
        ,value: 'original'
        ,triggerAction: 'all'
        ,editable: false
        ,selectOnFocus: false
        ,preventRender: true
        ,forceSelection: true
        ,enableKeyEvents: true
    });
    collections.combo.TVNAME.superclass.constructor.call(this,config);
};
Ext.extend(collections.combo.TVNAME,MODx.combo.ComboBox);
Ext.reg('collections-combo-TVNAME',collections.combo.TVNAME);

No perfect at all, but for now it works for me :)