Possible to set Filter Name for Cloudwatch log event trigger?

Say you have a lambda. And it’s triggered by a Cloudwatch log event. Great, Serverless can do that: Serverless Framework - AWS Lambda Events - CloudWatch Log

handler: myCloudWatchLog.handler
  - cloudwatchLog: '/aws/lambda/hello'

We can also set filters. Cool. But what about a filter name?

This is a value one can set in the AWS UI:

I assume this is the LogGroupName value specified in the Cloudformation API?

It appears Serverless does not support this value. Is that correct? Can someone confirm or deny?