Update campaign member status

I'm trying to find a way to automatically update Zoho campaign member status.

Here's the scenario:

I use Campaign Monitor to send emails. I connect Campaign Monitor to Zoho using Zapier.

When someone opens an email in Campaign Monitor, I want to change the Campaign Member Status in Zoho automatically.

Is this possible?

In Zapier I can see other fields in the Leads Module - but I can't find Campaign Member Status there or in any of the modules. I'm wondering if it's even exposed in the API?

Or would another way to do this be by using Workflows that I triggered with another field? Which seems a complicated way of doing it.