Facing problem to set boundary conditions

Hello TOUGH User Forum,

I am Asma

Recently, working on TOUGH3 simulation 

Here I have attached a TOUGH3 Input file (TOUGH3_Structure_Simulation.dat file) which is extracted from Leapfrog TOUGH after that this input file run in the TOUGH3 simulation.

I am trying to set a Boundary conditions in this TOUGH3 input file where surface domai temperature would be different from the basement domain, is it possible to set boundary condition in dat file before run TOUGH3?

Thanks in advance for your support and time.