From Vectorworks Developer
.VectorScript|VectorScript ..VS:Function Reference|Function Reference ..VS:Function_Reference_Appendix|Appendix
DescriptionUse to select the class option in a popup that ShowByClassChoice has been called on. This function must be called with FALSE param if the popup currently has the class selection and the script wishes to change to a non-class selection.
def vs.SelectClassChoice(dialogID, componentID, select): return None
dialogID LONGINT Id of the dialog componentID LONGINT Id of the popup control select BOOLEAN TRUE if setting by class or FALSE if programmatically restoring the value to a non-class setting after class setting was applied