Gets the selected timecode handle.
Namespace: Timecode.TimecodeThree
ActionScript.SetProperty(Timecode.TimecodeThree.SelectedTimecodeHandle,[value])
http://[ip]:4430/titan/get/2/Timecode/TimecodeThree/SelectedTimecodeHandle
POST /titan/set/2/Timecode/TimecodeThree/SelectedTimecodeHandle