Cheers!
I've got a field "A" and a field "B".
"B" has a tree view inside.
I want the "create" param of B.tree to be changed according to the value of A (True/False)
I could easily manipulate field B but, what I want is... inside B.
<field name="A"/>
<field name="B">
<tree editable="top" create="true">
<field name="whatever"/>
</tree>
</field>
Any bright idea? :)