problem with orders

I am making a trigger enhanced spell but i am having a problem with one of the variables. Heres what I have:

Events:
Unit starts the effect of an ability

Conditions:
Ability = (My custom ability)

Actions:
(Caster) = (Casting unit)
(Target) = (What am I suppose to put here)

I have also tryed

Events:
Unit is issued an order targeting object

Conditions:
Issued order = (How am I suppose to put my custom ability in here, all that It says I have for options is the default spells and orders in the editor)

Actions:
(Target) = (Target unit of issue order)
(Caster) = (I don't know what to put here either)


Can someone please help!!!!????

And use [ code][/code] tags when using triggers so u dont have to add all those other italicies and what not.

(Target) = Target of ability being cast

thnks so much!!!!

The [ code] crap is the sinlge most annoying thing on this forum... well right before rep points. (I have 57 :))