A unique identifier used for a bar within a variable length rebar set. 
   Namespace:   Autodesk.Revit.DB.Structure  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 18.0.0.0 (18.2.0.0) 
  Since:  2017 
Syntax
Remarks
 This property affects only Rebar sets under the following conditions: 
 - 1. The distribution type ( [!:Autodesk::Revit::DB::Rebar::distributionType] ) of the Rebar is DistributionType::Enum::VaryingLength.
- 2. There are at least two bars within the Rebar set that have different shape parameter values (i.e at least two bars vary in length).
The shape parameters of a Rebar can be accessed via [!:Autodesk::Revit::DB::Structure::RebarShapeDefinition::getParameters] method.
The parameters at a specific index in a Rebar set can be accessed via [!:Autodesk::Revit::DB::Structure::Rebar::getParameterValueAtIndex] method.
This property is assigned to varying Rebar sets only if they are numbered as a whole (i.e. NumberVaryingLengthRebarsIndividually is set to false).
The values for this property are valid if :- Input contains at least one character.
- Input contains either alphabetical or numeric characters (not both).
- For alphabetic suffix : Aaz -> Aba -> Abb.
- For numeric suffix : 129 -> 130 -> 131.
Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentException | When setting this property: The rebar number suffix is not valid if : 
 | 
| Autodesk.Revit.Exceptions ArgumentNullException | When setting this property: A non-optional argument was NULL | 
| Autodesk.Revit.Exceptions DisabledDisciplineException | When setting this property: None of the following disciplines is enabled: Structural. |