I'm using ArcGIS Pro version 3.3 and it doesn't appear to have the option to enter a Custom Message like is available starting in version 3.5 for Modelbuilder. I can hack something up by putting in a String variable then making that a parameter and setting the default value to all asterisks like this

But ideally I'd like a better way to display a message on my geoprocessing dialog box for this tool. Is there a better way than this? I can't seem to find a better solution on the internet.
Thanks,
Mark