Flash builder meta tags

so basically i want my stage to be 100% of browser space
i usually use this code for setting up height and width
[SWF(width=“720”, height=“500”, backgroundColor="#a3b4b7", frameRate=“15”)]

tried using width=“100%” but tells error can’t parse 100% as a number
tried using without " " just width=100% but allso tells error? so any1 knows how to do it?