Custom Ability Trigger Help!

I'm making a new custom ability called Legacy of the Dragoon. Basically it's an ability in memory of Kain(FF4). The hero is a Lancer, and what the ability does is fires an undead missle(you know that ability that heals undead and damages others, I forget what it's called right now) at the enemy that is modeled to be a bandit assasain. When the ability is being finished casting a new unit is created where the shot was fired(the bandit) and the unit which was shooting dies and turns into a riderless horse. So far here is what my trigger looks like, but it does nothing.

Trigger-1-Collect Variables
E: A unit - A unit is issued an order targeting an object.
C: Order Comparison - Issued order is equal to (string[xxxx])
A: Set variable - CasterPoint = Position of (Triggering Unit)
A: Set variable - ObjectPoint = Target point of issued order

Trigger-2-Spawn units
E: A unit - A unit finishes casting an ability.
C: Ability Comparison - Abilitying being cast is equal to Legacy of the Dragoon.
A: Create unit - Create (assasain) at (ObjectPoint) for (Owner of Triggering Unit)
A: Create unit - Create (riderless horse) at (CasterPoint) for (Owner of Triggering Unit)
A: Explode Triggering Unit
A: Set Variable- RiderlessHorse = Last Created Unit

Trigger-3-Mount Horse
E: Unit enters range - Unit enters range of(can't select the variable I want here for some reason. The variable type is a unit but I'm prompted to pick a unit off the map instead of a variable)
C: Unit equal to (unit type[assasain])
A: Explode Triggering Unit
A: Explode variable(RiderlessHorse)
A: Create (Lancer) at (point of triggering unit) for (owner of triggering unit)

So far nothing works, so I havn't even had a chance to try and debuf trigger 3. Any help would be great. Thank you!

I don't bump that often, but I'm stumped so... yeaaa. emote_sweat

For your trigger 3 add the action Trigger - Add Event
at the end of trigger 2.
This action let you add the event unit in range on a variable.

Thank you so much, the ability is so bad *** now. :D
It looks like a guy with a spear is jumping off of his horse and tackling the unit he's targeting. Really kool. If you ever need any help with triggers just ask me, I'll be more than glad to hel you sir. 8)

np, I am happy that I could help you.