by Warren » Mon Jan 25, 2010 5:05 pm
I think you're asking about gg_multi_level (speed bonus), it only recognizes level changes when they fire the gg_levelup event. The custom addon gg_buylevel does not fire this event, but simply increments the player's level.
You would have to re-code (or request the author of) gg_buylevel to fire gg_levelup instead of simply incrementing the level.