Could you provide a little more detail? For your first example, do you want this default to only work when that specific manager is making a change? Would this default owner be different by state, e.g., when an item is New, it is owned by Bob, when it is Working it is owned by Ted, etc.? Default values are an attribute customization and are configured per project area, but perhaps that's not what you are looking for?

Hello Millard,
I am trying to be more clear :-)
Yes, for example, I would like that default owner will be different by state. But it's just an example.

My main aim is to replace ClearQuest by RTC :-)
On clearquest, we can create a project workitem which contains all needed information to manage the project. For example, on this project workitem, we can set people who are in CC of all email, we can set open time for support ... And all this defined values are used by perl code when we change the state of ChangeRequest.

So now, on RTC, I have reproduced with a plugin the code on the "save" action but I don't know where I can store all needed values to my code. I think I have 2 solutions :

1) on the process configuration xml file
How ? What is the syntax ? I try it (My plugin Name is UpdateFieldOnSave) :

<role id="default">
      <operation id="com.ibm.team.workitem.operation.workItemSave">
          ...
          <precondition id="UpdateFieldOnSave" name="Update Field On Save"/>
                <parameter id="myNewParameterID" value="ItsValue" />
           </preconditions>
          ...
      </operation>
 </role>