Giving vision to players who have lost in arena

Im working on a arena-type map game.

I made a trigger so when a player have 0 food / all his units are dead he will loose.

Now i want him to gain visibility over the arena (a region) while he is dead, and then loose the visibility when one of the remaining players win the game.

I tried making a array called var_vision and then making it like this:

When a unit dies and the owner of the dying unit has 0 food the player is out. Then i create a visibility modifier who gives vision for owner of the dying unit, and then:

set var_vision (player number of owner of dying unit) = last created visibilty modifier.

Now this causes all players who loose to gain visibility over arena, and creates a variable in the array.

When the round ends, i do like this to be gone with the visibility:

destroy var_vision(1)
destroy var_vision(2)
etc...........................

But sometimes the players doesnt loose visibility. What can be wrong?

Off the top of my head id suggest disabling the visibility modifier insteadof destroying it. Ive not tested this so icant guarantee that im correct.

Haha yes i just changed it into that before reading this=)

I create the visibility modifiers in start, then enable/disable them during battle.

thx alot though=)