Making a hero non revivable at an altar?

Is it possible to make a hero non revivable at an altar?

I'm not sure if this works:
If it works, please tell me. This action is usually buggy.

There isn't even a trigger for that that I could find... Closest one was.

Player - Make Hero Unavailable for training/construction by Player 1 (Red)

Go into the Object Editor -> Select the alter in question -> Scroll down and select a field labelled "Techtree - Revives Dead Heros" -> Set to False

But that affects all heroes. What if he just one one type of hero non-revivable?

There's an option like where you can set the maximum amount of units for training, sorry if I don't remember that ATM.

What about removing the hero from the game when he dies?
If he is dead and non-revivable, u dont want to use him anymore, so...

Thsi is the trigger that I was suggesting before:

Have you tested it yet, I wonder if it has got problems, that, is reviving the same as training? (I don't know^_^)

Tested and....

It doesn't work :(

The only option avaliable is the HernanG, Remove unit from game disables reviving.

I don't want to remove the unit from the game... Because its for the familiars, familiars are heroes, but the main heroes are responsinle for ressurecting familiars, not altars.

'Revive' them the instant they die, store them in an array and hide them. Then trigger the revival process on the heros.

Found a pretty easy way... Just change the Hero Revival Location for that hero to a building that you'll never have...