FormBuilder linkNewValue issue

Hello,

I'm posting here since I cannot find a proper list for FormBuilder.

I have a big problem here:

* I have a FB form with one linkNewValue linked table (PK on linked table
points to FK on main table)
* When there is an error in the main form, the linked new value in sub-form 
is
inserted correctly in the DB, but the form is displayed again as nothing
would happened in the sub form.
* When I correct the main form and submit again, FB try to insert the sub-fo
rm
values again and fails because DB constraints check for uniq in the linked
table.

I don't know if this is a bug or I did'nt understand how it works.

Expected behaviour:

there are two possibilities:

1 - kind of rollback on insertion of linked sub-forms when the main form fai
ls
2 - set the sub-form hidden PK to the value of the last inserted row and set
the main form linked field to the same value


Any help would be higly appreciated.

TIA
--
Alessandro Pasotti
ICQ# 245871392
Linux User #167502