Local variables issue

[ZiGOR]

Hi there!
I have an issue with one of my abilities as I'm bad at local variables.
My ability has 10 levels and every 8 seconds it picks a random allied unit and grants it with an empty ability-effect that is supposed to be an absorbing shield, which owrks well if there is only 1 unit for every player as I use globals with the number of player index. But now there is a need to apply it for more than 1 unit, so could you help me with that trigger, please? (I also use Bribe's damage engine to detect damage)

Learn an ability

Hidden

• Spiritual Energy learn
  • Events
    • Unit - A unit Learns a skill
  • Conditions
    • (Learned Hero Skill) Equal to Spiritual Energy
  • Actions
    • Unit Group - Add (Learning Hero) to Spiritual_Energy_Owner_Group
    • Set Spiritual_Energy_Ability = Spiritual Energy effect
    • Trigger - Turn on Spiritual Energy loop <gen>

that's where the "shield" is given

Hidden

• Spiritual Energy loop
  • Events
    • Time - Every 8.00 seconds of game time
  • Conditions
  • Actions
    • Unit Group - Pick every unit in Spiritual_Energy_Owner_Group and do (Actions)
      • Loop - Actions
        • Set Spiritual_Energy_Owner = (Picked unit)
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Spiritual_Energy_Owner is alive) Equal to True
          • Then - Actions
            • Set Spiritual_Energy_Point = (Position of Spiritual_Energy_Owner)
            • Set Spiritual_Energy_Group = (Units within 900.00 of Spiritual_Energy_Point matching ((((Matching unit) belongs to an ally of (Owner of Spiritual_Energy_Owner)) Equal to True) and ((((Matching unit) is A Hero) Equal to True) and (((Matching unit) is alive) Equal to True))))
            • Unit Group - Pick every unit in (Random 1 units from Spiritual_Energy_Group) and do (Actions)
              • Loop - Actions
                • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                  • If - Conditions
                    • (Level of Spiritual_Energy_Ability for (Picked unit)) Less than or equal to 0
                  • Then - Actions
                    • Set Spitirual_Energy_Int = (Player number of (Owner of (Picked unit)))
                    • Unit - Add Spiritual_Energy_Ability to (Picked unit)
                    • Set Spiritual_Energy_Shield_Amount[Spitirual_Energy_Int] = (((Real((Level of Spiritual Energy for Spiritual_Energy_Owner))) x 20.00) + 10.00)
                  • Else - Actions
                    • Set Spiritual_Energy_Shield_Amount[Spitirual_Energy_Int] = (((Real((Level of Spiritual Energy for Spiritual_Energy_Owner))) x 20.00) + 10.00)
            • Custom script: call DestroyGroup(udg_Spiritual_Energy_Group)
            • Custom script: call RemoveLocation(udg_Spiritual_Energy_Point)
          • Else - Actions

and here's where the damage is done

Hidden

• Spiritual Energy absorb
  • Events
    • Game - DamageModifierEvent becomes Equal to 1.00
  • Conditions
    • (Level of Spiritual_Energy_Ability for DamageEventTarget) Greater than 0
  • Actions
    • Set Spitirual_Energy_Int = (Player number of (Owner of DamageEventTarget))
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • DamageEventAmount Greater than or equal to Spiritual_Energy_Shield_Amount[Spitirual_Energy_Int]
      • Then - Actions
        • Set DamageEventAmount = (DamageEventAmount - Spiritual_Energy_Shield_Amount[Spitirual_Energy_Int])
        • Set Spiritual_Energy_Shield_Amount[Spitirual_Energy_Int] = 0.00
        • Unit - Remove Spiritual_Energy_Ability from DamageEventTarget
      • Else - Actions
        • Set Spiritual_Energy_Shield_Amount[Spitirual_Energy_Int] = (Spiritual_Energy_Shield_Amount[Spitirual_Energy_Int] - DamageEventAmount)
        • Set DamageEventAmount = 0.00

I'd really appreciate if you helped me a little as I'm not fully sure that I know what is the correct syntax for locals, so an example would be divine