var YM_ID = this.options.form.getWidgetByName("YM_ID").getValue();var ACCOUNT_CODE = this.options.form.getWidgetByName("ACCOUNT_CODE").getValue();window.parent.FS.tabPane.addItem("${servletURL}?reportlet=" + encodeURIComponent("PC_FIN/FIN_GL_BALANCE_UDD_R_WD.cpt") +"&YM_ID=" + encodeURIComponent(YM_ID) +"&ACCOUNT_CODE=" + encodeURIComponent(ACCOUNT_CODE));这个是按钮控件点击跳转的代码,然后报下面的错误