My flash getURL in Framesets cant work! help!

im trying to do the navigation for a webpage using frames and flash… but they dont seem to work very well together.
in the flash actionscript, i typed:
which will target the frame named main to refresh as home.htm but the whole website refreshed instead…
i tried many ways _main, _target=“main” and many funny codes which all doesnt seem to work… help pls!!