Is it possible to do something like this?
Label -> {{msg.topic}} || SomethingAsDefaultString
Such that if {{msg.topic}} is empty, SomethingAsDefaultString populates the label? I guess I could always use a function to address the issue, or just an injection to set default label and then update the label as part of the text item (value) population, but would be cool if I could just set the label directly as noted above. What I am after is something like the initial message you can set on a chart, until chart data arrives.