How to damage invulnerable units?

[Nenad4o]

I have a problem with this.
I have towers that are invulnerable and i want when an Infernal comes within range of 400 to damage that tower for 50 dmg per second. I tried with Immolation Ability , set to damage invulnerable/structure units , but nothing. The effect shows but no damage is dealt. Also tried with Phoenix Fire but nothing too... Please help.

 

[Flare]

I don't think it's possible to damage Invulnerable structures in any way - you could try giving them a particular Targeted As type, such as Ancient, and make sure nothing (except your Immolation) is capable of targeting Ancient-class units?

 

[Gryffin]

there is an action that is order unit to damage unit or area.

 

[THE_X]

you cant damage invurnable unless you accualy set the life but thats not counted as damage, you could make a trigger saying if a unit takes damage (your towers) and the damage giver is an infernal do nothing else actions set life of (your tower) to life of the tower +damage taken

 

[vypur85]

It's possible to damage Invulnerable unit. Like this:

    Events
        Unit - A unit Starts the effect of an ability
    Conditions
        (Ability being cast) Equal to Channel 
        (Level of Invulnerable (Neutral) for (Target unit of ability being cast)) Greater than 0
    Actions
        Unit - Make (Target unit of ability being cast) Vulnerable
        Unit - Cause (Triggering unit) to damage (Target unit of ability being cast), dealing 100.00 damage of attack type Hero and damage type Normal
        Unit - Make (Target unit of ability being cast) Invulnerable

But this is irrelevant to your case . Probably you need to trigger your own Immolation.

 

[Dameon]

You can damage an invulrable unit with a negative regen spell.