Hello,
I tried to output some physical parameter like temperature , electron fraction and internal energy by adding 
CarpetIOHDF5::out2D_vars                    = "
HydroBase::temperature 
HydroBase::Y_e
HydroBase::eps
"
in the parameter file, but only eps are output successfully, the others are failed. Is there anything I have missed ?
Thank you.

Chia-Hui