Upload file in Monday zapier integration

I was trying to setup Zapier integration for my Monday-Account. I’m stuck in adding a file from an email to my monday board. I know that is now possible to upload files using the API! I wonder how the code have to look like. Can you help me with the function “add_file_to_column”?

This is how it looks right now, i want to add the “add_file_to_column” there:

{“datei3” : “{{89018884__all_attachments}}”}


Thank you very much!