This function is PROTECTED, and can only be called from Blizzard code. It has been protected since patch 2.0.1. For alternatives, try Secure Templates.

This page is about the API SpellTargetUnit.

This specifies the target that the spell should use without needing you to click the target or make it your main target.

SpellTargetUnit(unitId)

Arguments

unitId 

Unit ID : unit you wish to cast the spell on.

Example

local ue = UnitExists("target"); -- We'll need to know if we have a target at the moment. 
ClearTarget(); -- Get rid of it, either way
CastSpellByName("Power Word: Fortitude"); -- This gets us into cursor casting mode.
SpellTargetUnit("raid1"); -- This casts PW:F on raid1 (if you are in a raid).
if (ue) then
 TargetLastTarget(); -- Return target if it existed before we clared it.
end