How to Make a task failed if 4 groups of soldiers are dead?

[natanbrody 10]

I want to know how to make a trigger fail a task if 4 squads of soldiers are dead. please explain to me in the simplest way possible :D

[kylania 568]

trigger condition of:

{alive _x} count (units grp1 + units grp2 + units grp3 + units grp4) == 0

[natanbrody 10]

so grp1 ect are the name of the squad leader or the squad ID?

[kylania 568]

In each group leaders init put:

grp1 = group this;

and so on changing the 1 to whichever number the group is gonna be.