[Wien] problem of energy gap within mBJ

[halim said]

Dear Professor Peter Blaha, Tran and Wien2k users,
I have computed the energy gap for Cu2O by using GGA, mBJ, and GGA+U, I got same energy gap of 1 eV.In principle by using mBJ, the energy gap should be increased close to expermimental value around 2 eV.Why mBJ is giving same value as GGA and it is not improved? even I tried GGA+U and the same problem and no thing was changed for all approximations.
I would be thankful for your suggestion and answer to solve the problem.
Sincerely yours,
Halim Said
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://zeus.theochem.tuwien.ac.at/pipermail/wien/attachments/20170818/979d560d/attachment.html>