|  Fabrication  | 
 Add custom data type to the fabrication part. The new data gets the default value defined by the fabrication configuration. 
 Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
 Syntax
 Syntax  Parameters
- customId Int32
- The identifier of the custom data field to add.
Return Value
BooleanReturns true if the type was not already present.
 Exceptions
 Exceptions  | Exception | Condition | 
|---|---|
| ArgumentException | The custom data identifier does not exist. | 
 Remarks
 Remarks   The custom id must be positive. 
  See Also
 See Also