我想,根据参数值,控制两个按钮控件的显示.参数是这样写的吗$level..........................................................................................................................var city = this.options.form.getWidgetByName("一键展开_c");var thislen = '$level';if (thislen <= 10) { city.setVisible(true); this.options.form.getWidgetByName("一键展开_c").setVisible(true);} else { city.setVisible(false); this.options.form.getWidgetByName("一键展开_c").setVisible(false);}