我正在制作一个 usereventcript，它使用销售订单项目列表中的子字段来计算费率。尝试保存和部署脚本会启动错误无法评估脚本：{“type”：“error.SuiteScriptModuleLoaderError”，“name”：“UNEXPECTED_ERROR”，“message”：“missing } after property list (SS_SCRIPT_FOR_METADATA#32)”，“stack”：[]。

/**
*@NApiVersion 2.x
*@NScriptType UserEventScript
*/
define(
[
    'N/record'
],
function (record) {

    /**
    * @param {UserEventContext.beforeSubmit} context
    */
     function beforeSubmit(context) {
        //get taxcode
        var taxcode = context.newRecord.getValue({
            fieldId: 'taxcode'
          });
        if(taxcode !== 0 || taxcode !== 4){
            // Gets the Total Amount
            var amount = context.getValue.getValue({
              fieldId: "amount"
            });

        // Gets the quantity of an item selected
        var quantity = context.newRecord.getValue({
        fieldId: 'quantity'
        });            
        var rate_ = amount/quantity;
        var newRate = context.newRecord.setValue({
            fieldId : 'rate'
            value : ('rate',rate_)
            });
        }
    }


    return {

        // beforeSubmit: beforeSubmit,

    };
});