Hi

If you are familiar with reference, try using Data::Dumper

use Data::Dumper;
@pids = $pi->ListPids ();    # Get all known PIDs
@info = $pi->GetProcInfo ();    # Get the max

print Dumper [ @pids ];
print Dumper [ @info ];
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The above code will give a clear picture, then you can access it from the datastructure it shows.