if there r more than one units perhaps:
myArray = [bob,mary,jeff,alice,maxwell]
then in the condition field of the trigger:
count myArray != count myArray
*oops, just realized u would need a second trigger that continually counts your array and resizes its after a death. i dont know what your array is, but if its a <side> then the count command would maybe work here too, with the <side> of your array. in the Activation field of the second trigger:
myArray = West countside thislist
maybe that helps?
a very good question for my increasingly bad answer lcd lol