Thanks Ritesh,
me too think to use the method.
I will try to hide the value with pre-condiction or with characteristic refered to structures to hide value.
ECM is very strong to use in configuration because i have try to change with it but after the first modification ths system ask the ECM everytime to change a class or charateristic and not only you would like use .
Is there any way to use ECM not always in the class or characteristic? is a behavior setting by customizing?
Thanks a lot
Daniele