[flexcoders] Error: Could not resolve to a component implementation.

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Is there no mxml TextField tag ?

Error: Could not resolve <mx:TextField> to a component implementation.
<mx:TextField id="feedback" width="230" fontWeight="bold" text="" 
x="350" y="100" >
       
       
       
        </mx:TextField >

I'm trying to make the word "correct" with a font size of 20