The User defined Attribute "State" has to be set in the BE Class object. I have set it for you.
When you click on the "MU" in the library and select user defined attributes, you will see this.
Also, the Method object was absent in your library. I have added the object and created a method with an example of exit control. Also, when you are using the exit control for this, exit strategy is not essential I guess.
You can go through the model. Hope this helps.
This is exactly what I was missing! Thank you very much for your help. If you could juste tell me how to change this Class into BE it would be perfect!
Concerning the exit strategy, you are right. I think using the method is the fastest way and we have more possibilities to customize it!
Thanks one more!