Get Function for MUL SGroup Bracket Coordinates

Good evening,

in PilotScript there is a function to set the coordinates for brackets in Multiple Group (MUL) SGroups: MulGroupSetBracketCoordinates()

I wonder why the inverse function doesn't seem to exist. At least, I could not find any function MulGroupGetBracketCoordinates() or equivalent. 

Any suggestions how to access the coordinates? Do I really have to convert to a ctab and parse it myself?

Best,

Markus