burn a blu-ray using nero recode 12

I use nero 12 . Can I burn a blu-ray (nero-recode shows me only the target of 8.5 GB whlle the source is 41 GH so he will convert it to a low-quality dvd) and that's not what I want.
If I can burn a BD please which fields must be filled in.
Or must I upgrade (and to which version) ?
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