Node in context not available in Layout screen - please help

Dear all,

I'm trying to make an sample of Forms based on Adobe in ECC6.0 . I'll create a specific table and a specific function module for storing the value coming from the forms.

Then i create an Interface where i add only one parameters typing as my specific table .

Then i create my forms link with my interface , i set the layout of the forms as standard one in the properties Tabs .

I map the context of the Interface with my Forms and deactivate some fields .

When i go thru the layout of the forms , i can't see my context data .

Does somebody can help me ?

Best regards.