onDataChange method problem

Hi all,
I´m having problems with onDataChange method. I have a combobox, so when the user select another value from the combo i want to execute this method, but the onDataChange method it´s not running until the lost focus of that combo. My question is How can i solve this problem? how can i manage to run this method when the user select that other value from the combobox?

Thanks for the help, really appreciate

Save value on focusgained event and check with value using OnAction event ??

Did not test this just a gues.

the problem was that i had a ondatachange method and a lostfocus method, so neither of this method where executed until lostfocus. I solve the problem setting to none the lostfocus event.

tks hans