That's not right - the option button does not work with the alarm system. It was originally supposed to work with an optional receiver you connect to your garage door opener wires in order to open your garage door (but it is no longer available, I believe). It needs the DC voltage from the garage door opener wires in order to power itself and receive the signal from the remote. It is theoretically possible to find one of these and install it in the hatch-popper wiring on your VX and figure out a way to supply the correct voltage, but I don't think it's been done.
A bit of advice - check your oil level every tank of gas for the first few months and get to know your oil consumption rate. Some VX engines burn a quart per thousand miles, or even more. Other none at all.
Good luck!