saas-platform/frontend/saas-web/app/view/money/recBalance/FormPanelModel.js

Ext.define('saas.view.money.recBalance.FormPanelModel', {
    extend: 'saas.view.core.form.FormPanelModel',
    alias: 'viewmodel.money-recbalance-formpanel',

    formulas: {
        rb_custname_change: {
            bind: '{rb_custid}',
            get: function(v) {
                return v;
            }
        }
    }
});