Is your feature request related to a problem? Please describe.
In Player/Unit Info -> Health, you have the option to specify Health / Health % / Health Deficit, but not maximum health.

Describe the solution you'd like
Add Health (Max) as an option.

Describe alternatives you've considered
Custom trigger with "return UnitHealthMax("target") >= 50000", which works perfectly fine but would be more convenient to have it as an option there and I don't see a reason to not include it.