[Flow] Edit view, hidden fields, [__identity]

[mario chiari]

Hi,

how is that - in a Edit view for a Father/Son model - Flow inserts
hidden input fields:

<input type="hidden" name="father[__identity]" value="..." />
<input type="hidden" name="father[sons][0][__identity]" value="..." />
<input type="hidden" name="father[sons][1][__identity]" value="..." /> ?

I have developed a couple of basic packages, and for the simplest one I
am unable to force Flow to insert such hidden fields for the Son objects
(and so when I try to edit a father and all of his sons, Flow instead
creates new sons records unrelated with any father).

Help is welcome
thanks, cheers
mario