How to pass BitmapData thought LocalConnection

I have developed an application by AS2 and want use some function of AS3, so I use Action script bridge

here: http://www.gskinner.com/blog/archives/2007/07/swfbridge_easie.html
and http://www.jumpeyecomponents.com/Flash-Components/Various/ActionScript-Bridge-91/

When I use them, I can’t pass my BitmapData Object.

How could I fix for this problem?

Or have any way to reference Movieclip (AS2) which download to AS3 file for creating new BitmapData.

Thank you.