How last update date be displayed in GSheets following integration

I’ve established a Google Sheet integration for my form. While I’m aware of the submission date, I also require a “last update date” to track when respondents edit the form and how in the Gsheet that i integrated. I’d like these two dates to be distinct. Your assistance is appreciated. Thank you!

You can use custom logic to set a datetime into a hidden field value every time a change to the submission is made, then send it to your google sheet