Trying to upload files in array of objects

[sameeranand2711]

Hi,

I am trying to upload an array of objects where each object will have a list of attachments, something like:

var obj = {
Description: '',
RequestId: 'kjdsf9-dsfa',
Items: [
{ Description: '', Cost: 132.00, Files: [file1, file2]},
{ Description: '', Cost: 461.25, Files: [file3, file4]}
]
}

var promise = Upload.upload({
url: '/localhost/saveRequest',
method: 'post',
data: obj
});

However, on the server, the Files array inside every object is null.
Can we upload files as above? Or do we have to upload at the top level only.