How to update activity log in a change with Connectit

Hi experts,

I use connectit email connector to update interactions and incidents, which works perfectly.

Now I also want to integrate the connector for changes, what means if a contact replies on a mail from service mananger, the mail should be copied in the activity log. I can not find a related field in then updatechange connector   

Has any one already done this, which connector to use ?

9.34 with Process Designer

Thank's for any help

Kind regards