Unit Classification Problem

[Damage]

Hey everyone, I'm in the late stages of creating a team hero survival map.

In the map, many of the heroes have abilities which can stun enemy units, however, for the purpose of balance, all of the stun abilities last 0.01 seconds when used on an enemy hero - which are the bosses.

However, for some reason, these 0.01 second durations appear to be being applied to some other units too which are not heroes..

Specifically, there's a Felhound type unit, considered level 8. An Eredar, also level 8. Felguards, level 7. And Super Soldiers, level 8. They are all being treated as a hero target.
However, some other units, like Infernals which are level 14 and Doomguards which are level 12 do not show this strange behaviour. So I don't think the level is having an effect here.

I have checked for abilities such as Resistant Skin that might affect it, and the units' "targetted as" are also not set to Hero.

So what could be causing them to only receive a 0.01 second stun?

 

[Damage]

I found the solution myself.. I changed their races to "Demon" which now means that they aren't targeted as a hero.

Apparently a monster of race "Creep" with a level over 6, is considered to be a hero / have resistant skin.