Gets or sets the context track. This is the last selected track. At the moment we only really expect there to be one track selected at once but in future some operations such as move and delete may allow multiple selection
Namespace: SetList
ActionScript.SetProperty(SetList.ContextTrack,[value])
http://[ip]:4430/titan/get/2/SetList/ContextTrack
POST /titan/set/2/SetList/ContextTrack