flex - clear the text field or destroy the object -

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I have a text field, which holds the session value. Now that I do the logout operation .. Text field clearing does not work ... 

  sessionHold.text = "";

The above code does not work, it does not clear the session value in the field. 

  appSes = event.result as array var vinoth: string = string (appSes [0]); Alert.show (vinoth); SessionHold.text = appSes [1];

Now I am a bit confused ....

Why do not you have to hold session ID inside a text field and not inside the string variable ?!


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