You mean something like this?
class Item9
{
position[]={6057.55,0,2491.35};
a=100;
b=100;
activationBy="WEST";
repeating=1;
interruptable=1;
age="UNKNOWN";
name="base";
expCond="{_x distance thistrigger > 200 } count [man1,man2,man3] != 0";
expActiv="base = [] execVM ""custom\map_updates\base_entry.sqf"";";
expDesactiv="null =[] execVM ""custom\map_updates\base_leave.sqf"";";
class Effects
{
titleType="TEXT";
titleEffect="PLAIN DOWN";
title="You are in a Adminbase! You will be warned!";
};
};