Changing Student Membership State Using Rules

Hi, First of all, I'd like to thank you guys for developing this awesome platform. Here's my problem. I want to change student membership state to "Blocked" when the course expires instead of removing the student from the course. From what I understand, correct me if I'm wrong, Opigno is unsubscribing/removing the student from OG(course) when reaction rule "User Expiration Cron" is trigerred through "Unsubscribe user from group" action. What I'm thinking is to remove that action and change it to "change membership state" action. My question is how am I supposed to create "change membership state" action ? Or is there an easy way to create it using rules? Thanks in advance :)