[JASS] How to detect buffs?

[tarik00555]

I made spell that applies a buff to a unit, and it worked as it should so I went into my triggers to figure out a way to detect buffs. I've found this BJ function:

function UnitHasBuffBJ takes unit whichUnit, integer buffcode returns boolean
    return (GetUnitAbilityLevel(whichUnit, buffcode) > 0)
endfunction

So I figured that I can detect buffs same as abilities but it won't work.
Here's my code:

function Trig_RuneSpawn_Actions takes nothing returns nothing
    local unit triggerer = GetTriggerUnit()
    if GetUnitAbilityLevel(triggerer, 'B000') > 0 then 
        // Even if a unit has this buff this if will return false
        if GetUnitLevel(triggerer) <= 3 then
            call CreateItem('I003', GetUnitX(triggerer), GetUnitY(triggerer))
        else
            call CreateItem('I004', GetUnitX(triggerer), GetUnitY(triggerer))
        endif
    endif
endfunction

//===========================================================================
function InitTrig_RuneSpawn takes nothing returns nothing
    local integer i = 0
    set gg_trg_RuneSpawn = CreateTrigger()
    call TriggerRegisterPlayerUnitEvent(gg_trg_RuneSpawn, Player(PLAYER_NEUTRAL_AGGRESSIVE), EVENT_PLAYER_UNIT_DEATH, null)
    loop
        if (IsPlayerEnemy(Player(0), Player(i))) == true then
            call TriggerRegisterPlayerUnitEvent(gg_trg_RuneSpawn, Player(i), EVENT_PLAYER_UNIT_DEATH, null)
        endif
        
        set i = i + 1
        exitwhen i == bj_MAX_PLAYERS
    endloop
    call TriggerAddAction( gg_trg_RuneSpawn, function Trig_RuneSpawn_Actions )
endfunction

Everything else works, but that if never returns true. I really have no idea as to what might be the problem.

 

[WaterKnight]

The unit loses the buff on death.

 

[tarik00555]

The unit loses the buff on death.

Ohh.... Thank you!