grub2 windows 7 chainloader root=UUID

[Greg White]

Hi,

Is it possible to boot Windows 7 using a UUID instead of hard coding set root=(hd0,1)?
Something like:
menuentry "Windows 7" {
    set root=UUID=4396-78D9
    chainloader (${root})/EFI/Boot/bootx64.efi
}

I tried the above but I get disk not found.

Thanks,
Greg