Garmin GPS and extnded runway centerline

"Not really a trick, but not very well document all the same, if you are flying a visual approach you can tune the OBS on NAV1 to the runway heading and then click the OBS button on the 430. This will draw an extended runway centerline on the GPS to help with when to turn final." I've seen my friend use this feature in several real world aircraft. I was wondering if the Garmin GPS inside FSX supports this feature. I tried to recreate it but I was unable. Thank you.