How to attach a file to a transaction in a multiple field of the File type?

Question

Bitrix24

Hello! Please tell me, I use the events OnBeforeCrmDealUpdate and OnBeforeCrmDealAdd .
I need to attach a file to the deal in a multiple field for these events.
The file is stored simply in a folder, and I know the path to it.

Answer 1

This is how I solved the problem:

$fields['UF_CONTRACT_REGISTER_DOCUMENT'][0] = \CFile::MakeFileArray($pdf['id']);