Count units inside trigger area

[MAJORdorMo 10]

I'm trying to write a script that creates a trigger on a unit and detects how many civilians are inside the trigger area.

Here is what I have:

_unit = _this select 0;

_trig = createTrigger["PRESENT",getPos _unit];
_trig setTriggerArea[100,100,0,false];
_trig setTriggerActivation ["CIV", "PRESENT",true];
_count = count list _trig;
titleText[str(_count),"PLAIN DOWN"];

However, _count is always 0, no matter how many civilians are in the trigger area.

I've also tried using

_trig = createTrigger["EmptyDetector",getPos _unit];

but I got the same results.

[CarlGustaffa 4]

Did you try delay before counting? Too tired right now, but delays are usually the first thing I try when I'm not getting obvious results back.

[shuko 59]

Carl is right. It needs a small delay.

This worked, so does a simple sleep.

_unit = _this select 0;

_trig = createTrigger["EmptyDetector",getPos _unit];
_trig setTriggerArea[100,100,0,false];
_trig setTriggerActivation ["CIV", "PRESENT",true];
waituntil {count list _trig > 0};
_count = count list _trig;
titleText[str(_count),"PLAIN DOWN"];

[Tankbuster 1744]

<offtopic but maybe relevant>

count list doesn't work for radio triggers.