After method statement you can ass "output" statement which by you can determine what kind of parameter you want to extract, for example as like below:

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method newton trap

output e.field jx.e jy.e jx.h jy.h opt.int con.band val.band e.velocity h.velocity

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you just have to plot a simple ".log" file contain the solved values, then by right click on tonyplot, and choosing "Display", choose any parameter as x-coordinate and any one you want as y-coordinate.