Mailchimp - Googlesheet - Add and/or update

Hi,

Hello all,

I have a problem with automating Mailchimp to GoogleSheet.

I would like to receive the details of individuals who have received an email through Mailchimp campaign. To do this, I have used Mailchimp List Campagin Open Details on Make.com. Then I would like a new record to be added, if it does not already exist or updated with the number of times it has been opened. Somehow I only manage to update the records, but not add them.

Thanks for the help