Flux A/m^2 Analysis not Working

When I run simulations with Boundary Conditions set to "Dirichlet (V)" it works perfectly. However, whenever I set Boundary Conditions to "Flux" (A/m^2) instead of "Dirichlet" (V), the analysis shows any E or J results as zero. Not sure what I am doing wrong... has anyone had the same problem?

Thank you!

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What is the error message indicated by the red triangle? Maybe the flux is negative. Did you try adjusting the limits on the colorbar?