Classes derived from "Active" classes don't override certain "thread properties", such as ActiveThreadName or ActiveThreadPriority.
If you model a derived class that extends an "Active" class, and override one or more of the following properties, the values you specify for the properties will not be reflected in the generated code.
The constructor required to override these fields does not exist for the base class.
Resolving the problem
Create the appropriate constructor manually and call it in order to propagate the values.