Reports if the analytical model has regenerated in a document with reaction loads. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
Remarks
 Revit sets this property to False after regeneration of the analytical model if the document contains loads that have isReaction=True. This results in a user-visible warning that exists until there are no longer loads with isReaction=True.