|  Built  | 
 You have set the stair's multistory top level to None, and Revit will remove this parameter, if you want to create a multistory stair, please use Create Multistory Stair feature. 
 Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
 Syntax
 Syntax  Property Value
FailureDefinitionId See Also
 See Also