How to change the value of a business process field in Bitrix24 box using php?

Question

Bitrix24

Good day!

Can you please tell me how to change the document field in another already completed business process using php code in one business process?
The field that needs to be changed is of the type: "Binding to elements in the form of a list"

Answer 1

any ideas?

Answer 2

Perhaps this will help, in the box you can run php code from a business process and change the template of the previous one.
The method changes the business process template parameters:
https://dev.1c-bitrix.ru/api_help/bizproc/bizproc_...