How to use nested file upload?

[EizFeren]

Hi guys, I'm trying to use Altair for testing my mutation what requires file, but in nested prop.

mutation LoadFile($data: LoadFileInput!) {
  loadFile(data: $data)
}

LoadFileInput has next structure

{
  "taskId": Int!
  "file": GraphQLUpload!
}

I'm trying to use Altair for this, but cant properly attach file to input

How can I to use file's upload in nested input prop?

[ariefsn]

try to set field name to data.file