components too heavy want to write in AS3

[mainegate]

I'm looking to add a checkbox and a combobox but it adds a huge amount of filesize to my project. How can I just import the basics?

I have tried:
var cb:ComboBox = new ComboBox();
cb.move(10,10);
cb.setSize(300,25);
cb.rowCount = 12;

addChild(cb);

However, I'm getting a type not found...is it because I'm not importing right? What is the correct import?

[nyghtrunner]

The path would be:

fl.controls.ComboBox

I've never had any luck with importing any of the "fl." classes though... For some reason, it never recognizes them. Of course, I gave up about 6 months ago when I was building SWC components for Flex. I couldn't ever get it to recognize the UIComponent Class when I published. Someone else here might know more about this than I do, but I've never had any luck with it... Even though the code helper is tripped when you type "fl.", it never seems to be a compile time compatible pathing method. :(

[Robbus]

Have you put an instance of the component in the library as well as adding the import fl.controls.ComboBox line to the code?

Cheers,
Rob