change behaviour of all units by trigger

[_qoR]

I am creating an army base master-draft.
So I want to include a trigger, which changes the behavior of all units within the area if any opposite unit is detected. Besides I want to sound an alarm if triggered.

What do I have to put into the OnAct box to change the behavior of all friendly units? Wouldnt matter if the behavior of all units, enemies as well, changes.

And how do I sound the alarm? There are sounds under "Empty" ojects, even a sound for alarm. But this sound ALWAYS sounds. Unfortunately there is no proper sound under the triggers options

thanks in advance folks =)

[Hendo]

Hiya,
You could try this script for your alarm that I made under a different handle many moons ago
http://www.armaholic.com/page.php?id=9179
For a change in behavior try this.

//////////////////////////////////////////////////////////////////
// Function file for [ARMA2/Combined Ops]
// Created by: Hendo
// in a trigger place this in the onact
// hen = [(thislist select 0)]execVM "setbehaviour.sqf";
//////////////////////////////////////////////////////////////////

_caller = _this select 0;
_seek_type = "MAN";
_check_radius=30;
_seeker_unit = [getPosASL _caller select 0,getPosASL _caller select 1,0] nearObjects [_seek_type,_check_radius];

{
/*
"BLUE" (Never fire) 
"GREEN" (Hold fire - defend only) 
"WHITE" (Hold fire, engage at will) 
"YELLOW" (Fire at will) 
"RED" (Fire at will, engage at will) 	
*/
	
_x setCombatMode "BLUE";

/*
"CARELESS" 
"SAFE" 
"AWARE" 
"COMBAT" 
"STEALTH". 
*/

_x setBehaviour "STEALTH";
}forEach _seeker_unit;

//DEBUG SCRIPT ==>
hint "This has exited";

Here is the Wiki link to the Definition on SetBehavior
http://community.bistudio.com/wiki/setBehaviour

GoodLuck

Edit: fixed code to include all units within radius