Negative Upgrades?

If your asking why I should just test it myself, I can't. I'm spending a month at my sister's house and can't play Wc3. And I haven't tested it myself.

Can you give negative values to upgrades? If it is possible, then I just figured out a way to reduce maximum health. :P

You can use negative values for upgrades, but in this case all it would do is lower the HP Max to 1.

What? That sucks. But Manuals of Health can have a negative effect, right?