Flash Builder is ignoring [SWF(width = "640", height = "480", frameRate = "60", backgroundColor = "#

Hi,

I have a pure actionscript project in flash builder 4.6. When I set the stage with this:

[SWF(width = "640", height = "480", frameRate = "60", backgroundColor = "#000000")]

Flash builder is ignoring it.  How do I fix this?

cheers.