globals
    hashtable Hash = InitHashtable()
endglobals

function Trig_Spell1_Conditions takes nothing returns boolean
    return GetSpellAbilityId() == 'AEbl'
endfunction

function Spell1_Timer takes nothing returns nothing
    local timer t = GetExpiredTimer()
    local integer h = GetHandleId(t)
    local effect ef = LoadEffectHandle(Hash, h, 1)

    call DestroyEffect(ef)
    call DestroyTimer(t)

    set ef = null
    set t = null
endfunction

function Trig_Spell1_Actions takes nothing returns nothing
    local unit un = GetTriggerUnit()
    local effect ef
    local timer t = CreateTimer()
    local integer h = GetHandleId(t)

    set ef = AddSpecialEffectTarget("Abilities\\Spells\\Human\\slow\\slowtarget.mdl", un, "chest")
    call SaveEffectHandle(Hash, h, 1, ef)
    call TimerStart(t, 5., false, function Spell1_Timer)

    set un=null
    set ef=null
endfunction

//===========================================================================
function InitTrig_Spell1 takes nothing returns nothing
    local trigger trg = CreateTrigger()
    local integer i = 0

    loop
        call TriggerRegisterPlayerUnitEvent( trg, Player(i), EVENT_PLAYER_UNIT_SPELL_CAST, null)
        exitwhen i>=11
        set i = i + 1
    endloop
    call TriggerAddCondition( trg, Condition( function Trig_Spell1_Conditions ) )
    call TriggerAddAction( trg, function Trig_Spell1_Actions )

    set trg = null
endfunction

scope test initializer Test_Init {
    void Test_Init() {
        trigger trg = CreateTrigger()
        //...
    }
}