This can be done by enabling and disabling tracks in the scene directors.
Sample/untested script:
'Debug Message
Engine.DebugMessage("Start"�,0)
'Defining Vars
Dim scenedir As xpSceneDirector
Dim track As xpSceneDirectorTrack
Dim i As Integer
'Enable or Disable
i = 1
'Get the SceneDirector
Self.GetSceneDirectorByName("SceneDirector1"�,scenedir)
'Get the track to Disable or Enable
Scenedir.GetTrackByName("Track3"�,track)
'Logic
if i = 0 then
track.Enabled = false
else
track.Enabled = true
'Debug Message
Engine.DebugMessage("End"�,0)
#XPression