This attribute lets you define the Reference Point used by a stopping condition.
Astrogator <Satellite Object Path> SetValue <Attribute Path>.StoppingConditions.{Stopping Condition}.CalcObjectAttributes.ReferencePoint {Value}
This attribute is interchangeable with the CentralBody and CoordSystem attributes, and is used for stopping coniditions that take a reference point into account (e.g., R Magnitude).
Astrogator */Satellite/Satellite1 SetValue MainSequence.SegmentList.Propagate.StoppingConditions.R_Magnitude.CalcObjectAttributes.ReferencePoint "CentralBody/Earth L1"
Astrogator */Satellite/Satellite1 SetValue MainSequence.SegmentList.Maneuver.FiniteMnvr.StoppingConditions.R_Magnitude.CalcObjectAttributes.ReferencePoint "CentralBody/Earth L1"
Astrogator */Satellite/Satellite1 SetValue MainSequence.SegmentList.Follow.StoppingConditions.R_Magnitude.CalcObjectAttributes.ReferencePoint "CentralBody/Earth L1"
Astrogator */Satellite/Satellite1 SetValue MainSequence.SegmentList.Hold.StoppingConditions.R_Magnitude.CalcObjectAttributes.ReferencePoint "CentralBody/Earth L1"
STK Programming Interface 11.0.1