[flexcoders] Restricting characters in User input controls

[kotha poornima]

Hi,
I want to exclude single quotes and double quotes in the user input
So i coded the statement like this:
<mx:TextArea id="txtInput" restrict="^’\"" />

But iam getting error like this:(Iam not able to exclude double quotes)
Element type "mx:TextArea" must be followed by either attribute specifications, 
">" or "/>"

Can anyone help me out of this.

Thanks in Advance,
Poornima