Building Blackberry Playbook App in Adobe AIR/FLEX

Ive bee开发者_运维百科n trying to write my first Blackberry Adobe Flex application but get the following errors:

1172: Definition mx.controls:Label could not be found.

Any idea why?

Thanks Phil

You probably didn't include the MX namespace: xmlns:mx="library://ns.adobe.com/flex/mx"

But don't use mx.controls:Label try the spark label (s:Label) (include the xmlns:s="library://ns.adobe.com/flex/spark")