Thank you for your reply.I have made sure I am using the correct units for everything. However, when I try plotting $continuous_alpha ($DeltaH would work but I stopped defining that as a project variable) as you suggested, I get a constant alpha that is 9.5e85. I have tried placing my line at the boundary and inside the magnetic material, but it yields the same answer. I'm plotting alpha vs. distance. I tried plotting it vs. the intrinsic variable Y and it gave me the same result as vs. distance. Is there something else I'm missing?nBtw, by using the correct units, I'm getting the results I expect, so I believe the absorbing boundary condition is working. However, I'd still like to double-check what alpha profile I'm inputting. n