Calculating Magnetic Vector Potential in HFSS

I am trying to calculate the partial self-inductance of specific features in a conductive assembly. To accurately calculate the partial self-inductance, you must use the magnetic vector potential method; however, it is difficult to calculate using the fields calculator. The magnetic vector potential equation is:

=

The prime variables point to the source current while the non-prime variables point to the observation point. The problem is that I need to integrate over the prime variables so that the magnetic vector potential is a function of the observation point (i.e. I need a value for magnetic vector potential for every grid point). Has anyone solved this problem using HFSS or something similar?

Sorry, the equation didn't show up in the final post. Here it is.