RS API referenceFrameComboBox

Hello -

I am attempting an addin that will create some parts that would be parameterized by settings - and am having a hard time trying to figure out how to use the referenceCombobox control - using ABB.Robotics.RobotStudio.Stations.Forms.

Any instructions or examples on how to initialize, add coordinate systems to the list and use in creating bodies/parts would be greatly appreciated.

Thanks in advance…