How we send a file uploaded by user to third party API that using multipart/form-data and FILE datatype

Hi team, I want to know how to sending file uploaded by user using File Prompt Node to third party backend via API Module using multipart/form-data and File data type?

Also I want to confirm, is it already correct way to config the body for handling dynamic file?

And what is the datatype that we pass in the API Node for sending this file?

Thank you!