Gmail to Notion Database Issue with Creating Contents

Hi,
I am trying to integrate Gmail and Notion but having some problems with the attachments and plain body contents from Gmail to Notion.
I can’t find how to insert the attachments into Fields with Files and Media property.
One of the Fields has Text property; I can insert an email subject to it but can’t find the way to add email Text content to it.
This Text property is a page with an email subject to its title, but I can’t find how to add the content to it.
Can someone help me with this matter, please?
Thank you,
SJ