check side of unit, then check knowsabout of enemyside groups?

so ive searched and found this :

http://forums.bistudio.com/showthread.php?t=102376&highlight=knowsAbout+side

EDIT ************ SOLVED

so after alot of tinkering i managed to finally solve this. If anyone is interested in getting something similar to work here is a function i created, that works alot like a trigger that detects if an enemy is spotted, regardless of what side that unit is on (supports east/west only) it automatically updates the scanning area for enemies when the unit moves.

if (isnil "FNC_DZ_Spooked") then {
   FNC_DZ_Spooked = {
       private ["_unit", "_unitgroup", "_unitside", "_enemygroups", "_enemy"];
       _unit = _this select 0;
       _unitgroup = group _unit;
       _unitside = side _unit;

       // Check Faction of unit, and consider all groups that are enemy of him
       switch (_unitside) do {
           case EAST: {
               player sidechat "Enemy is WEST";
               _enemy = west;
           };
           case WEST: {
               player sidechat "Enemy is EAST";
               _enemy = east;
           };
       };

       // update area and check for units
       while {alive _unit} do {
           _enemygroups = nearestObjects [getpos _unit, ["Man","Tank", "Air", "Car"], 500]; 
           {if (side _x == _enemy) then {
               if (_unitgroup knowsabout _x > 0.5) then {
                   // "WHATEVER U WANT TO ACTIVATE HERE"
               };
           };
       } forEach _enemygroups;
       sleep 5;
   };
};
};

to use it:

[unitnamehere] call FNC_DZ_Spooked

or you can spawn it as well if u want to have multiple units check for enemy surroundings.

problem solved, see script above if u want something similar