[lammps-users] average enthalpy

I would like to print out average enthalpy of all atoms to a certain file
when I use
fix 2 all ave/time 10 4000 50000 c_thermo_temp c_thermo_pe sil.txt
it calculates the average temp. pressure and writes to the file sil.txt
but when I add c_thermo_enthalpy it gives error.
How can I print out to a file the average enthalpy of all atoms?
Dundar YIlmaz

Enthalpy is not a compute, but a thermo keyword.
If you put it in a variable, then you can access it with
fix ave/time.