[Solved] Inaccurate damage reduction value?

[Ofel]

This function should return the damage bonus of an attack type against an armor from Gameplay Constants.

function hAI_GetUnitArmorReduction takes unit u, attacktype aType returns real
    local boolean dmgEventEnabled = IsTriggerEnabled(udg_hAI_DE_DamageEventTrigger)
    local real originalArmor = BlzGetUnitArmor(u)
    local real originalMaxLife = BlzGetUnitMaxHP(u)
    local real originalLife = GetWidgetLife(u)
    local real testLife
 
    call BlzSetUnitArmor(u, 1)
    call BlzSetUnitMaxHP(u, 10000)
    call SetWidgetLife(u, 10000.)
    call DisableTrigger(udg_hAI_DE_DamageEventTrigger)
    call UnitDamageTarget(u, u, 100., false, false, aType, DAMAGE_TYPE_NORMAL, null)
    set testLife = GetWidgetLife(u)
 
    if dmgEventEnabled then
        call EnableTrigger(udg_hAI_DE_DamageEventTrigger)
    endif
    call BlzSetUnitArmor(u, originalArmor)
    call BlzSetUnitMaxHP(u, R2I(originalMaxLife))
    call SetWidgetLife(u, originalLife)
 
    return (10000. - testLife) / 100.
endfunction

What I tried and happened
Using ATTACK_TYPE_PIERCE:
- Unit armor = Hero --> returns 0.472 (should be: 0.50)
- Unit armor = Fortified --> returns 0.330 (should be: 0.35)
- Unit armor = Normal --> returns 0.943 (should be: 1.00)

Gameplay constants is default, which is:
Combat - Damage Bonus Table - Pierce
- Small: 2.00
- Medium: 0.75
- Large: 1.00
- Fortified: 0.35
- Normal: 1.00
- Hero: 0.50
- Divine: 0.05
- Unarmored: 1.50

I solved this myself so nevermind
Sorry..

Solution:
Use DAMAGE_TYPE_UNKNOWN instead.