[General] Need help fixing JASS Code for functions to remove/readd abilities.

[nchp1903]

So basically, I've been making a few custom abilities and stuffs, and I realized that some of them won't work properly for one reasons or another. Details below:

Spoiler

• Frostbite Aura
  • Events
    • Unit - A unit Learns a skill
  • Conditions
  • Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (Learned Hero Skill) Equal to Frostbite Aura
      • Then - Actions
        • Unit - Remove Frostbite Damage Aura (Frostbite 1) from (Triggering unit)
        • Unit - Remove Frostbite Damage Aura (Frostbite 2) from (Triggering unit)
        • Unit - Remove Frostbite Damage Aura (Frostbite 3) from (Triggering unit)
        • Unit - Remove Frostbite Damage Aura (Frostbite 4) from (Triggering unit)
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Level of Frostbite Aura for (Triggering unit)) Equal to 1
          • Then - Actions
            • Unit - Add Frostbite Damage Aura (Frostbite 1) to (Triggering unit)
            • Custom script: call UnitMakeAbilityPermanent(GetLearningUnit(),true,'A69Q')
          • Else - Actions
            • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
              • If - Conditions
                • (Level of Frostbite Aura for (Triggering unit)) Equal to 2
              • Then - Actions
                • Unit - Add Frostbite Damage Aura (Frostbite 2) to (Triggering unit)
                • Custom script: call UnitMakeAbilityPermanent(GetLearningUnit(),true,'A69S')
              • Else - Actions
                • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                  • If - Conditions
                    • (Level of Frostbite Aura for (Triggering unit)) Equal to 3
                  • Then - Actions
                    • Unit - Add Frostbite Damage Aura (Frostbite 3) to (Triggering unit)
                    • Custom script: call UnitMakeAbilityPermanent(GetLearningUnit(),true,'A69T')
                  • Else - Actions
                    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                      • If - Conditions
                        • (Level of Frostbite Aura for (Triggering unit)) Equal to 4
                      • Then - Actions
                        • Unit - Add Frostbite Damage Aura (Frostbite 4) to (Triggering unit)
                        • Custom script: call UnitMakeAbilityPermanent(GetLearningUnit(),true,'A69U')
                      • Else - Actions
      • Else - Actions

• This is for an ability called Frostbite Aura. When learned, the Hero will gain another Aura on top of that (Frostbite Damage Aura) based on Building Damage Aura (Tornado).
• In my tests, levelling up the Damage Aura didn't work, and disabled->re-enabled also did not, so the solution is to remove the old and re-add the new when the Hero learns Frostbite Aura. This unfortunately doesn't work if the Hero is preplaced, and learned the ability beforehand.
• Since I remember that there are other abilities also working that way, I want to make a script that's like this for future-proofing:

call ReAdd('myabilcode')

//Still incomplete.

function ReAdd1 takes nothing returns boolean
    return (GetUnitAbilityLevelSwapped(udg_TempAbilCode, GetFilterUnit()) > 0)
endfunction

function ReAdd2 takes nothing returns nothing
    local integer int = GetUnitAbilityLevelSwapped(udg_TempAbilCode, GetEnumUnit())
    call UnitRemoveAbilityBJ( udg_TempAbilCode, GetEnumUnit() )
    set bj_forLoopAIndex = 1
    set bj_forLoopAIndexEnd = int
    loop
        exitwhen bj_forLoopAIndex > bj_forLoopAIndexEnd
        call ModifyHeroSkillPoints( GetEnumUnit(), bj_MODIFYMETHOD_ADD, 1 )
        call SelectHeroSkill( GetEnumUnit(), udg_TempAbilCode )
        set bj_forLoopAIndex = bj_forLoopAIndex + 1
    endloop
endfunction

function ReAdd3 takes nothing returns nothing
    local group Group = GetUnitsInRectMatching(GetPlayableMapRect(),Condition(function ReAdd1))
    call ForGroupBJ( Group, function ReAdd2 )
    call DestroyGroup (Group)
endfunction

function ReAdd takes integer ID returns nothing
    local integer AbilId = ID
    call ReAdd3()
endfunction

, and it will search the map for those with that ability, remove it, then re-add at the same level. However, I'm at a stump, because I ran out of brain juice to figure out a way to remove the global variable udg_TempAbilCode and replace it with 'myabilcode'.


tl;dr: I want to remove the use of Global Variables in my ReAdd functions.