Checking to see if a dynamically spawned group is all dead

[redmotion 10]

I'm creating a Group of enemies called _defendgrp1. Then I'm trying to create a trigger that will be alerted when all members of the _defendgrp1 are dead. I've got this far from reading some other threads dotted around:-

_trig = createTrigger["EmptyDetector",_locationPosition];

_trig setTriggerStatements ["{alive _x} count units _defendgrp1 == 0", "hint 'Dead'" ,"hint 'Alive'"];

also tried:

_trig setTriggerStatements ["({alive _x} count units _defendgrp1) < 1, "hint 'Dead'" ,"hint 'Alive'"]

as TriggerStatements/condition.

Is this the right approach? Or Am I missing something?

Thanks in advance.

[shuko 59]

I doubt you'll get far with using local variable for the group. Either use global var, name the group or pass the group to the trigger with format command.