Change Shift+F1 into F1

My keyboard has goofy media keys that require holding the function button down so i made a script to change F1-F8 into the media keys without any modifier needed.  The problem im running into is i want to still be able to use the F1-F8 keys by using them with a shift modifier.  I had this setup before but lost it when i formatted.  I remember it being something along the lines of +F1::{F1} 

This doesn't seem to want to work though and i'm not sure why.