Errors with custom made Chain Lightning

[zero9x]

I tried to make Chain Lightning Spell by my self to add more effects (slow, stun etc) but i got some errors:
- I made it to bounce max 3 units, only bounce 1
- Lightning Effect only affect to primary target, secondary, third target doesnt have it
- Damage only did to primary, and bounce 1

Now im stuck and dont know where to fix it, please help me..

My triggers:

• Chain Lightning
  • Events
    • Unit - A unit Starts the effect of an ability
  • Conditions
    • (Ability being cast) Equal to (==) Bounce Lightning
  • Actions
    • Set ChainLightning_Caster = (Casting unit)
    • Set ChainLightning_Hit[1] = (Target unit of ability being cast)
    • Set ChainLightning_Point[0] = (Position of ChainLightning_Caster)
    • Set ChainLightning_Point[1] = (Position of (Target unit of ability being cast))
    • Unit - Cause ChainLightning_Caster to damage ChainLightning_Hit[1], dealing 100.00 damage of attack type Chaos and damage type Universal
    • Special Effect - Create a special effect attached to the origin of ChainLightning_Hit[1] using Abilities\Weapons\Bolt\BoltImpact.mdl
    • Special Effect - Destroy (Last created special effect)
    • Lightning - Create a Chain Lightning - Primary lightning effect from source ChainLightning_Point[0] to target ChainLightning_Point[1]
    • Set ChainLightning_SFX[1] = (Last created lightning effect)
    • Trigger - Turn on Chain Lightning Bounce <gen>

• Chain Lightning Bounce
  • Events
    • Time - Every 0.30 seconds of game time
  • Conditions
  • Actions
    • Set ChainLightning_Group[1] = (Units within 400.00 of (Position of ChainLightning_Hit[1]) matching (((((Matching unit) is A structure) Not equal to (!=) True) and ((Matching unit) Not equal to (!=) ChainLightning_Hit[1])) and ((((Matching unit) is alive) Equal to (==) True) and (((Matchin
      • Multiple FunctionsIf (All Conditions are True) then do (Then Actions) else do (Else Actions)
        • If - Conditions
          • (Number of units in ChainLightning_Group[1]) Equal to (==) 0
        • Then - Actions
          • Lightning - Destroy ChainLightning_SFX[1]
          • Trigger - Turn off (This trigger)
          • Custom script: call DestroyGroup (udg_ChainLightning_Group[1])
          • Custom script: call RemoveLocation(udg_ChainLightning_Point[1])
          • Set ChainLightning_Caster = No unit
          • Set ChainLightning_Hit[1] = No unit
          • Trigger - Turn off (This trigger)
        • Else - Actions
          • Unit Group - Pick every unit in (Random 1 units from ChainLightning_Group[1]) and do (Actions)
            • Loop - Actions
              • Lightning - Destroy ChainLightning_SFX[1]
              • Set ChainLightning_Hit[2] = (Picked unit)
              • Set ChainLightning_Point[2] = (Position of (Picked unit))
              • Unit - Cause ChainLightning_Caster to damage ChainLightning_Hit[2], dealing 100.00 damage of attack type Chaos and damage type Universal
              • Lightning - Create a Chain Lightning - Secondary lightning effect from source ChainLightning_Point[1] to target ChainLightning_Point[2]
              • Set ChainLightning_SFX[2] = (Last created lightning effect)
              • Set ChainLightning_Group[2] = (Units within 400.00 of (Position of ChainLightning_Hit[2]) matching (((((Matching unit) is A structure) Not equal to (!=) True) and (((Matching unit) Equal to (==) ChainLightning_Hit[1]) and ((Matching unit) Equal to (==) ChainLightning_Hit[2]))) and ((((Mat
                • Multiple FunctionsIf (All Conditions are True) then do (Then Actions) else do (Else Actions)
                  • If - Conditions
                    • (Number of units in ChainLightning_Group[2]) Equal to (==) 0
                  • Then - Actions
                    • Trigger - Turn off (This trigger)
                    • Custom script: call DestroyGroup (udg_ChainLightning_Group[1])
                    • Custom script: call DestroyGroup (udg_ChainLightning_Group[2])
                    • Custom script: call RemoveLocation(udg_ChainLightning_Point[1])
                    • Custom script: call RemoveLocation(udg_ChainLightning_Point[2])
                    • Set ChainLightning_Caster = No unit
                    • Set ChainLightning_Caster = No unit
                    • Set ChainLightning_Hit[1] = No unit
                    • Set ChainLightning_Hit[2] = No unit
                    • Lightning - Destroy ChainLightning_SFX[2]
                    • Trigger - Turn off (This trigger)
                  • Else - Actions
                    • Unit Group - Pick every unit in (Random 1 units from ChainLightning_Group[2]) and do (Actions)
                      • Loop - Actions
                        • Lightning - Destroy ChainLightning_SFX[2]
                        • Set ChainLightning_Hit[3] = (Picked unit)
                        • Set ChainLightning_Point[3] = (Position of (Picked unit))
                        • Unit - Cause ChainLightning_Caster to damage ChainLightning_Hit[3], dealing 100.00 damage of attack type Chaos and damage type Universal
                        • Lightning - Create a Chain Lightning - Secondary lightning effect from source ChainLightning_Point[2] to target ChainLightning_Point[3]
                        • Lightning - Destroy (Last created lightning effect)
                        • Custom script: call DestroyGroup (udg_ChainLightning_Group[1])
                        • Custom script: call DestroyGroup (udg_ChainLightning_Group[2])
                        • Custom script: call DestroyGroup (udg_ChainLightning_Group[3])
                        • Custom script: call RemoveLocation(udg_ChainLightning_Point[1])
                        • Custom script: call RemoveLocation(udg_ChainLightning_Point[2])
                        • Custom script: call RemoveLocation(udg_ChainLightning_Point[3])
                        • Set ChainLightning_Caster = No unit
                        • Set ChainLightning_Hit[1] = No unit
                        • Set ChainLightning_Hit[2] = No unit
                        • Set ChainLightning_Hit[3] = No unit
                        • Trigger - Turn off (This trigger)