lookup field result is not showen in sharepoint

Hi,

i have list with two lookup columns.

in my solution i cascaded the two columns as described in this article

it helped me cascading the two columns but the problem is that when I’m saving a new record or editing an existing one, the values in this field are not displayed.

i had also 2 behaviors which weren’t as explained in the article:

1. in the lookup inside the default values i didn’t manage to select value but result (see in screenshot)

2. once i changed the default values i got an error saying that there is a circular reference, which was only resolved when i deleted the Parent.Default form the defaultselecteditem property (see screenshot).

my dataset:

can't select value:

circular reference:

any idea?

if any other info is required i will be happy to provide.