Go to edit, variables.
Make a new one, called whatever you like.
Its gonna be a region variable, check ARRAY.
In the map init, set the variables for each player.
Region[1] = (then pick player 1 region)
Region[2] = (and pick player 2 region)
Now, when you hit the trigger to revive, it has a Center of region option. Pick that, and pick your VARIABLE for the region.
Center of Region[player number of (owner of reviving/triggering unit)]