从ExtJS单选按钮访问值

所以我声明一个ExtJS单选按钮对象如下:

.AddExtObject("{xtype:'radiogroup', ref:'../AndOr', defaults:{name:'rdo-payee2'}, width:120, items:[{boxLabel:'And', checked:true, inputValue:'and'},{boxLabel:'Or', inputValue:'or'}]}")

if (checkWin.Payee2.AndOr.getValue() == 'and') {
                fundingRec.set('IsPayee2RequiredToSign', '1');
            } else {
                fundingRec.set('IsPayee2RequiredToSign', '0');
            }
            Global.alert(checkWin.Payee2.AndOr.getValue());

但是,在我的save方法中,它输出以下内容:

[object Object]

如何根据需要正确访问此字段的值?