Add description for Multiple Documents in process from a task

Hello,

User will upload multiple documents, and has to add description (in input widget) for each document.
I tried to add description property since it is already there to the uploaded file

supportingDocumentsInput: $data.context.supportingDocuments_ref.map( doc => ({
id : doc.id ? doc.id.toString() : null,
filename : doc.newValue && doc.newValue.filename ? doc.newValue.filename : null,
tempPath : doc.newValue && doc.newValue.tempPath ? doc.newValue.tempPath : null,
contentType : doc.newValue && doc.newValue.contentType ? doc.newValue.contentType : null,

description: doc.newValue ? "description Added!" : null
}))

it's added when file uploaded but at next task (review task) I found out each file has empty description like I didnt set the real description for the file of multiple documents.

Any help would be appricated