[Wien] volume optimization

[Matthew Stream]

Dear WIEN2k users and Prof. Blaha:

Could you teach me if there's a way to calculate the Energy vs. volume
curve for bulk, QW, QWR, QD (whatever, e.g. GaAs bulk crystal) with
realistic band gap ( comparable to the experimental value)?

As far as I know, mBJ is only a potential which is not applicable to the
optimization, while HSE functional is not yet introduced into WIEN2k.

Kind regards,
Mat