Thanks, Sanjit.
I solved using javascript (jQuery) client-side, calling ASMX/WCF Services server-side.
I access to this structure 2 times. First, I need to validate login parametrers from DB; second, to get reserved area content server side e show data client-side.
I have to integrate this solution in Muse, the next and last step.
I query to community because I'm beginner to use Adobe Muse, and I don't know this world.
Probably I'm in mistake by my question. I received only your answer in one month.
I hoped to receive widget reference to solve ...... Thanks another time, good morning.