Can I change Multi-Metric Alert email subject?

I'm consolidating some alerts that create multiple emails, the best way I found so far is use "All metrics in this list" for a single metric. This seems to have worked except I was planning on creating multiple alerts. They all have the subject "Multi-Metric Alert". Is there any way to change that per-alert? The intention is to have multiple Multi-Metric Alerts each with a different subject.