VR and Ground...
 

Hello friends... I am new at PHOENICS and i am attempting to solve a basic diffusion(C1) problem.....
I want to give the C1 values of the opposite walls(objects) as functions i.e my boundary conditions..... can anyone tell me how do i access GROUND directly from VR or do i have to use PLANT or INFORM ???????
I want to do the problem as simply as can be done......