Welcome to the forums, Cook
Try something like this:
TriggerRadius: 0,0
Condition: none (repeatedly)
Condition Field: "_x distance
object < 2" count
[ unit1,unit2,unit3...] > 0
OnActivation field:
actionname =
object addaction ["
Action","
Action.sqs"]
OnDeactivation Field:
object removeaction
actionnameMake a trigger like that one, and include all the units you want to set the action off in the bold array. Then whenever any of those units approaches within 2m of
object the action will be added to it. When all those units are more than 2m from
object, the action will be removed