The funny thing is, if I use @In(create=true) I get this:
In attribute requires value for component:

I wanna outject a field from Component A and inject it into Component B during 
a request. This works. From this time on, the injected field should keep its 
value during all the next requests. But because the value isn't in the context 
any more, Seam tries to inject null. So I've to use @In(required=false) to 
avoid the exception. But this way, Seam injects null, overwriting the existing 
value. To avoid this, I thought "Let's outject the field", and annotated it 
@Out. But it doesn't work. Seam furthermore tries to inject null.

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