I have a data grid with several text fields and a button. When the user clicks the button it grabs their username and enters it into a signoff field for electronic signature. I want this button to be disabled if either of the following are true:
1) the "user type id" field for that row does not equal 1,2 or 3.
2) the "disposition" field for that row is empty
I'm fairly new to flex so examples are appreciated.