Style sheet for scrollbar (desperate in need of assistance )

hi there,

I looked up some help in flash itself, i looked at a tutorial about style sheets and i really dont get it to work…

The only thing i want to change is the appearance of my scrollbar. I want to change the little arrows and the back bar of the thing.

This is what i came up with:
formStyleFormat = new StyleFormat();
formStyleFormat.arrow = 0x800080;

Maybe i dont get the help file right but when i look @ pompstyle i dont even c the addlistener and applychanges.

Could some1 explaine to me what i do wrong i would like to fix it.

Greetz FaitH