Hi, my apologies in advance for what is probably a trivial question - I am new to Comsol. I am attempting to create a simple model of magnetoresistance. I have defined a permanent magnet in the MFNC physics module and a current-carrying wire in the MEF module. I have a domain probe measuring the Z component of magnetic flux density (mfnc.Bz) through the relevant wire section and I would like to use this value to scale either the resistance of or current through the wire in the MEF module. Right now I get a 'failed to evaluate variable' error. I have tried using two solvers but I get the same error. Perhaps I am going about this the wrong way? Any advice would be appreciated.
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