Heated rear windscreen doesnt

I have a heated rear windscreen which doesnt appear to work
Checked the fuse which seems ok, when you flick the switch nothing lights up on the dash & there is no heat coming from the window at all.
Anyone point me in the right direction, I thought it may be that I need a new switch but wasnt sure.
Thanks again in advance

it probably has a break in the element, this is usually the case, i think yiou can get a repair kit from halfrauds but i dont know how effective they are, i would imagine a new one is a bit pricey