As with features and models, external objects can also have user-defined parameters. Although you can specify parameters for an external object, there is no method to retrieve these parameters interactively in Creo Parametric. Therefore, external object parameters are a way to store information in the Creo Parametric model that is not accessible to end-users.

You can convert a ProExtobj object to a ProModelitem object by casting. See the Parameter Objects section for more information.