Adobe Flash Builder 4: Fade Effect with Auto Hide after Countdown?

In a Flex Project开发者_JAVA百科, whenever there's an error, I fill in the error data into a hidden TextInput then show the control to the user. I want to make it so that after showing the TextInput, it will automatically hide itself after some time with a fade effect. How would I go about doing that?

for such cases i use a custom MotionCreator class. There are a lot of tweeners in the web