Error.Unable to use mx:CustomDateTimeAxis to implement the component.

Question

Hello.
I have a modified class DateTimeAxis to show data labels in my own format:
package
     import mx.charts.DateTimeAxis;
     public class CustomDateTimeAxis extends mx.charts.DateTimeAxis
          public function CustomDateTimeAxis()
               super();
          override protected function formatDays(d:Date, previousValue:Date, axis:DateTimeAxis):String
               return d["date"];
In main application:
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:horizontalAxis>
     <mx:CustomDateTimeAxis id="xAxis" dataUnits="days" parseFunction="myParseFunction"/>
</mx:horizontalAxis>
The compiler produces an error:
"Unable to use <mx:CustomDateTimeAxis> to implement the component."
Can you help me. Thank you.

Answer 1

The issue is very clear: you are using the wrong XML namespace to add your component. The mx namespace is defined for the Flex SDK, so unless you have a custom build of it then your component isn't in there.
http://livedocs.adobe.com/flex/3/html/help.html?content=intro_3.html