Guys,

Is there any function to get the user input in account password field while logon?

No. Such a function would be an extreme security risk.

I'm not sure what you're trying to do, but anything that requires the user's password isn't the right way to do it.

Once a user has logged-in to a database you can determine their authenticated account name and their privilege set name. (FMP 11 allows differentiation between the privilege set they originally authenticated to, and the privilege set they currently have - this gets around confusion when a script is running with full access privileges.) The account name and privilege set name should be all you need.

Trying to get the user input in the password to pass it as calculation for external datasources (odbc) connection.

I've never done ODBC stuff (I may be doing EES soon though to MySQL) but my understanding is that the ODBC link authentication is done at the driver/server level.

Yes its done at driver lever if username and password is not stored in the external datasource. But if you store, it applies to all users which is dumb and lazy programming from Filemaker.