it's not that simply increases one well the small box is the basics for cool health
but oneday one friend made a 1337/666 it wasn't cool health but the fact that it was way higher then the left one made it weird
-that 1337/666 thing crashed! after 2 seconds it crashed u i did not matter if you clicked other unit ok..that's all i wanted to say it can be more then +1 what you add
oh and try placing a " - " and other number in small and go play that map and tell me what happens
ADDITION:
oh yeah and i don't know what is it
[right][snapback]196132[/snapback][/right]
Whatever it was, it definitely wasn't the small HP box. There are other ways to make a unit's HP greater than it's max. One method includes using unit sprites, but the HP must be the same as the unit's default, and there aren't any units with 1337 HP.