Heroes randomly leveling up

[NecroVirus]

Hello, in my map I have it set in the game preferences so heroes do not gain experience and only level up through triggers. However during gameplay they still randomly gain levels (especially if a large group of units die at once). Anyone know a better way of doing this or know how I could rig a trigger to fix it?

 

[mmtt]

Disabling Xp

• Melee Initialization
  • Events
    • Map initialization
  • Conditions
  • Actions
    • Hero - Disable experience gain for Blood Mage 0000 <gen>

Adding XP

• Untitled Trigger 001
  • Events
    • Unit - A unit Dies
  • Conditions
  • Actions
    • Hero - Enable experience gain for Blood Mage 0000 <gen>
    • Hero - Add 25 experience to Blood Mage 0000 <gen>, Show level-up graphics
    • Hero - Disable experience gain for Blood Mage 0000 <gen>

 

[Overfrost]

Just to add:

• Hero - Make Player 1 (Red) Heroes gain 0.00% experience from future kills

Though I haven't tested 0% for that.