I thought you might be interested in looking at Saving an array of unit variable names, selecting one of those names at random and then using it as a trigger condition.
https://forums.bohemia.net/forums/topic/226062-saving-an-array-of-unit-variable-names-selecting-one-of-those-names-at-random-and-then-using-it-as-a-trigger-condition/?do=findComment&comment=3382135
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