Font Embedding in Custom Class

programming flash
1

Hello everybody

With reference to the subject, I am using the following statement to embed the font within my custom class:

[Embed(systemFont = "Verdana", 
    fontName = "VerdanaReg", 
    mimeType = "application/x-font-truetype")
]

If I use the same code within my FLA, it works fine, but using inside my custom class, it reports error:
“The definition of base class FontAsset was not found.”

I have added the following references in the Library path:
** $(AppConfig)/ActionScript 3.0/libs
$(FlexSDK)/frameworks/libs/flex.swc**

I have even tried adding;
$(AppConfig)/ActionScript 3.0/libs/framework.swc

But, nothing helps. It seems I have to Import something in my class; but I don’t know what to import or do something alike.

Please help.