How To use Model OOP in Java, Sorry i am newbie : I have a Model Active Admin, i have created String ID setter and getter.
when i use setID in Login Form, i use this :
`ActiveAdmin AA = new ActiveAdmin();`

    AA.setId(txtIdAdmin.getText());

and i test getter from login form, it work.
but when i test in another form, in another java class, in diffrent file, i can't get my string ID in Active Admin.
i used `AA.getId();`
and the result is blank.

please help me. any suggestion or answer.
sorry if my english is bad.
