How to access root iterator

Jdev 11.1.1.4
I have a page with a region in it.
I need the region to update one field in the parent. This field is binded to a VO attribute through an iterator. The VO is filtered via two binding variables (with a view criteria). The region changes the values of the VO binding variables (via request variables).
I have tried AdfFacesContext.getCurrentInstance().addPartialTarget(field); but the field's iterator is updated from the cache and no SQL is sent to the database. The result is that the field is not updated.
If I'm able to execute rootIterator.executeQuery in the region, I think the field will be updated because this instruction will force it to read data from the database and then apply the binding variables in the query.
With JSFUtils.findComponentInRoot("pt_pb2") I'm able to access an UI element from the root. I would need something like this but related with binding.
May I get the binding and the the iterator via the pageDef file ? It's another option.....
Any idea ?
Thanks in advance.

Hi,
a quick solution is to ensure you use a shared Data Control and no isolated transaction. In your region you access the binding for the iterator (you may have to create it manually in the Executable section of the PageDef file that belongs to the view displayed in the region). Once you have this created, you can access it from BindingContext--> getCurrent-->getCurrentBindingsEntry --> get('name of iterator binding') - Now you are good to change the value in here. In the parent view, ensure the iterator has its ChangeEventPolicy (PageDef file) property set to ppr so that a change of the information refreshes the UI
Frank

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