Prison rescue trigger help

this trigger works fine, it creates a wisp in a ''prison''. Just like those sheep, tree tags. Shadow unit is a hero.
But now i cant figure out how to make so when an ally of player 1 enters the prison, all dead allys in his team will revive at their start location.

Just make it so when a unit enters region (Team 2 Prison) and that unit belongs to an ally of player 1 and isn't a Dead Runner then do a loop (let's say you have x players on the team) that checks it with a boolean

for A 1 ... x
if player dead = true (boolean variable) then
create 1 Shadow at Team 1 Base (region)
end if
end for

now, if you want to do it with hero units, I think you need to modify it slightly by reviving instead of creating a unit, and having all the units you will be reviving stored in an array.

Array Heroes (unit)

Heroes [1] Player 1's Hero
Heroes [2] Player 2's Hero
Heroes [3] Player 3's Hero
Heroes [..] ..

This is a little rough, so someone correct me if there is a more effeceint way to do it. Also, this is just pseudo-code.

I don't exactly get what you're talking about, but do you mean if X person enters X region all X people get rescued (like in a tag)?

If so, then do: Unit enters region, check if the unit belongs to an ally of player 1, pick all units in that region, kill them, then create them in those player's start locations...