_veh setVariable ["compressorOn", false, true];

_compressorOnAction = _veh addAction ["Включить компрессор", '(_this select 0) setVariable ["compressorOn", true, true]; hint "Компрессор включен";', "", 0, false, false, "", '((driver _target) isEqualTo player) && !(_target getVariable ["compressorOn", false])'];
_compressorOffAction = _veh addAction ["Выключить компрессор", '(_this select 0) setVariable ["compressorOn", false, true]; hint "Компрессор выключен";', "", 0, false, false, "", '((driver _target) isEqualTo player) && (_target getVariable ["compressorOn", false])'];