embedAsCFF not working

I am trying to embed my font as CFF in Adobe Flex 4.6 with Adobe Air 3.6. Following works well in Adobe Air 3.1 but when I have updated to 3.6, the embedAsCFF doesn't make any affect.

@font-face {
    src:url("/assets/fonts/myfont.ttf");
    fontFamily: testfont;
    embedAsCFF: true;
}

Is there any work around in Air 3.6 please?

Thanks,

Zishan J.