File Upload with cUrl

Hello,

I develop a software with 4D, I'm using the cUrl Plugin (https://github.com/miyako/4d-plugin-curl) to upload my files.

First I used blobs to upload my files, in the blob there was all the information about the file (name, id of the parent).

But now, I want to use the new cURL Option : CUROLPT_READDATA (9) wich allows me to use directly the path to the files, without using the blobs.

My question is, how can I send the information about the parent without using blob ? is there an option ?

Thanks in advance!

Thomas