Class selector names must start with a period when using getStyleDeclaration()

         

<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
    <mx:Style>
    .myFontStyle {
      fontSize: 15;
      color: #9933FF;
    }
    </mx:Style>
    <mx:Script>
    public function changeStyles(e:Event):void {
         StyleManager.getStyleDeclaration('.myFontStyle').setStyle('color',0x0000CC);
    }
  </mx:Script>
    <mx:Button id="myButton" label="Click Here" styleName="myFontStyle" click="changeStyles(event)"/>
</mx:Application>

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Class selector names must start with a period when using getStyleDeclaration() : CSS Selector « Style « Flex

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