init.sqf - Init script on client side

# Method 1 with trigger and passing parameter
_createVehicleFn1 = {
  _vehicle = _this select 0;
  _pos = getPosATL spawnTrigger;
  _veh = "C_Hatchback_01_F" createVehicle [ _pos select 0, _pos select 1, _pos select 2];
};
["C_Hatchback_01_F"] call _createVehicleFn1;

# Method 2 with marker
_createVehicleFn2 = {
  _veh = "C_Hatchback_01_F" createVehicle getMarkerPos "spawnMarker";
};
call _createVehicleFn2;

# Method 3 with trigger and passing parameter with different syntax
_createVehicleFn3 = {
  _pos = getPosATL spawnTrigger;
  _veh = createVehicle [_vehicle, [ _pos select 0, _pos select 1, _pos select 2], [], 0, "NONE"]
};

["C_Hatchback_01_F"] call _createVehicleFn3;

player addAction ["Send Message", {
}];

initServer.sqf - Init script on server side

"sendThisMessage" addPublicVariableEventHandler {
  private ["_data"];
  _data = (_this select 1);

};