Trigger Help - Modifying Phoenix Fire Ability

[zulrivers]

Hey, I'm trying to freeze or slow down units when being hit by my unit's Phoenix Fire but it doesn't seem to work properly.. Please help//

• Modified Phoenix Fire
  • Events
    • Unit - A unit Finishes casting an ability
  • Conditions
    • (Ability being cast) Equal to Phoenix Fire
  • Actions
    • Unit - Cause (Casting unit) to damage (Target unit of ability being cast), dealing 0.00 damage of attack type Spells and damage type Cold