Welcome to the Hive. If you want to introduce yourself to the Hive Workshop Community, you can do so
here.
To answer your question, if you're doing (
for example) a spell that automatically kills an enemy under 200 HP, you can't add
fields to do that, all the abilities inside the
Ability Editor are hard-coded.
You have to use triggers to do those custom spells. Blizzard did not use some fields they put onto certain spells, so you could still be able to create different skills without using triggers.
Anyway, here's an example that I referred to previously. This trigger kills the unit if it's under 200 HP. Includes heroes.
[TRIGGER=GUI Trigger]pIE_eAter
Events
Unit - A unit Starts the effect of an ability
Conditions
(Ability being cast) Equal to
YourAbility
Actions
If ((Life of (Target unit of ability being cast)) Less than 200.00) then do (Unit - Kill (Target unit of ability being cast)) else do (Do nothing)
[/TRIGGER]
This will not give experience to the caster, however. I tryed to make it less confusing possible. If you are new to
World Editor, this might hard enough already.