赛普拉斯（cypress）-将值传递给自定义命令

Question

我成功使用了自定义命令，也向参数发送参数以进行登录等；但是，我在使用更复杂的用例时遇到了问题，并且看到我传递的值未将其放入自定义命令cy.request主体中。如果删除了所需值的传递，则可以在自定义命令中交换好值。如果有人能够识别出我所缺少的内容，我将不胜感激。我在代码块中添加了一些注释，以描述工作原理和我的一些尝试。

Cypress.Commands.add('POST_and_PATCH_Order_for_DriverId', (value) => {
    cy.fixture('orderEntry.json').then((oldBody)=>{

        let newBody = oldBody;

        newBody['Carrier']['DriverId'] = value; //it's not getting a value? 
        //newBody['Carrier']['DriverId'] = 5250;  //this works stand-alone w/o the value passing

        cy.request({
            method:'POST',
            url:'/api/OrderEntry',
            json: true,
            body: newBody
        })
    })
        .then(response => {
            return new Promise(resolve => {
                const target = response.body;
                resolve(target);
                return target;
            })
        })
})

     it("Uses API to create driver, assign orders & patch the order status to Delivered", () => {
          cy.signIn({ user: 'Myuserval', password: 'Mypasswordval' });
          driverExpPg.visit();
          //this puts a unique driver name in for driver creation call & is working fine
          cy.updateDriverName().then(driver => {
               //response body for addDriver is like:
               //Driver created successfully with id: 5199
               const driverId_val = driver.toString().slice(37);
               //this searches UI with the driver Id I get from a prev API call
               driverExpPg.searchDriver(driverId_val);  //also works
               //ideally would like to pass driverId_val here but even a directly set value is not being passed
               cy.POST_and_PATCH_Order_for_DriverId(5286).then(order => {
                    for (let i = 0; i < order.length; i++) {
                         const OrderId_val = order[i].OrderId;
                         cy.request({
                              method:'PATCH',
                              url:'/api/OrderManager/StatusDelivered',
                              json: true,
                              body: {
                                   "OrderId": OrderId_val,
                                   "DeliveryReceiptName": "string"
                              }
                         })
                    }
               })
          })
     })

如果我不替换自定义命令中的值，则一切正常，但是它使用了夹具JSON文件中的静态值。如果我在自定义命令中将其替换为直接设置的值，则它也可以工作，但对于工作流程所需的值也无效。不好意思，我没有为简化测试而简化测试，但实际上不确定当前发生了什么。感谢您的输入。