Central locking on vr Commodore

Been trying to get my central locking to work had it working for a day and it stopped working so I took the key to a lock smith and he copied and gave me a newkey as well as programing the new remote itook it home and and put it in with the proceedure of turn key to reds wait a minuteand start for a minute turned off and left car to check and nothing happened so I went back to him and he said because the red light on the black button on console under radio was not flashing and how do I reset it