Possible to watch 2 healthcheckIds on a singlestat panel using AWS cloudwatch?

Hi,

Im trying to monitor 2 healthcheckids from AWS cloudwatch in a singlestat panel like this:

But when exiting the panel or just changing the options tabs of the panel and back to “Metrics” the second healthcheckId is gone. Is this a bug or is this intended?

Is it even possible to watch 2 healthcheckIds in a singlestat panel?