[flexcoders] Undefined Method Error

[Adrian Williams]

Y'all,

   Here's a frustrating one....I have this function defined:
           public function convertEmailToMailto(emailAddy:String):String
           {
               var mailtoEmailAddy:String ;
               mailtoEmailAddy = '<a href="mailto:' + emailAddy + '">' 
+ emailAddy + '</a>';
               return mailtoEmailAddy;
           }

   And am referencing it like this:

                               <mx:itemRenderer>
                                   <mx:Component>
                                       <mx:Text 
htmlText="{convertEmailToMailto(data.emailAddress)}"/>
                                   </mx:Component>

   And am getting the error "Call to a possibly undefined method 
convertEmailToMailto".  It's probably something stupidly simple, but I 
can't seem to see the forest for the trees.  Help anyone?

Thanks,
Adrian