You have attempted to enter the mysterious twilight zone of FXScript. For some unknown reason, FXScript and everything related to it seems to have simply "stopped" a few years ago. I'm trying to create a few simple effects, and I'm about to give up on FXScript because there is just no documentation available any more, other than http://www.fxscriptreference.org/ which is just a list of the functions with very little description on how to actually string the things together.
Oh well. Another technology left out in the cold to die.