Assuming data table `co_invoices_x_products` has an addtional field ordernum, How to read the field with this project?  example img: [https://img-blog.csdnimg.cn/2020121712093723.png](https://img-blog.csdnimg.cn/2020121712093723.png)
Assuming data table
co_invoices_x_productshas an addtional field ordernum, How to read the field with this project?example img: https://img-blog.csdnimg.cn/2020121712093723.png