Do you mean plot in a external application ?
You may be interested in parameter Language / Run / Post-process feasible solutions, that allows postprocessing scripting to be called for each CPLEX feasible solution.
You may then write in your model a post-processing block
execute {
var now = new Date();
writeln(now.toLocaleString());
writeln(cplex.getBestObjValue());
...
}
or whatever might be useful to generate a chart from the values
#DecisionOptimization#Support#SupportMigration