Trigger activation when group is dead

[za0 3]

Well, how can I make a trigger be activated when a whole group is dead?
I found this in another topic with the same question but it didn't work for me : 

{alive _x} count units (groupname) == 0

tks in advance!
 

[beno_83au 1361]

Assuming you name your group correctly it should be just fine:

({alive _x} count (units _group)) == 0

But, depending on what you're doing it might be better to use https://community.bistudio.com/wiki/lifeState instead of alive.

[R3vo 2652]

units _group findIf {alive _x} == -1

Should work as well.