How use component Flash with Flash Builder 4.7

Hello,

Since some days, I work with Flash CC and Flash Builder 4.7 (Creative Cloud)

I don't find solution to use ComboBox classes in Flash Builder 4.7

Before,  i created a swc with FlashCS6

with the component ComboBox in the library.

In Flash Builder 4.6, i referenced my swc,

and i wrote :

import fl.controls.ComboBox;

import data.DataProvider;

and it worked fine.

How can i do?

Thanks for your response.