[Trigger] Trigger / Ability Trigger prob

[Sorenkj]

I've created a trigger that's activated when a unit uses an ability.
The target unit of ability being cast, should get invulnerable after 10 seconds if their hit points is below 100%

• Events
  • Unit - A unit Finishes casting an ability
• Conditions
  • (Ability being cast) Equal to Renew
• Actions
  • Wait 10 seconds
  • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
    • If - Conditions
      • (Integer((Percentage life of (Target unit of ability being cast))) Less than 100
    • Then - Actions
      • Unit - Make (Target unit of ability being cast) Invulnerable
      • Special Effect - Create a special effect attached to the chest of (Target unit of ability being cast) using Abilities\Spells\Undead\Cripple\CrippleTarget.mdl
      • Wait 5 seconds
      • Unit - Make (Target unit of ability being cast) Vunerable
      • Special Effect - Destroy (Last created special effect)
    • Else - Actions
      • Do Nothing

But if the unit is below 100% hit points after the duration of the Renew ability has ended, it DOES'NT get invulnerable :/

pls help!