Magnetic Flux Function

Hello,

I'm working with the magnetic fields, no currents module to create an axially symmetric model. I'm verifying past work done by a colleague. He used another program to plot the flux function of the model (see attached image).

Does Comsol have similar functionality? I have modelled the same item, but I only seem able to plot the flux density, not the flux function (see second attached). Ideally I would like the two attached images to match fairly closely.

My understanding is that the flux function, Phi, is a function of the flux density, B:
Phi = Integral( B dA)

Any help is greatly appreciated!

Thanks,
Chris