Greetings Monks, long time listener.....first time caller

I am attempting to accomplish something that I'm sure is probably dumb but I'm a hack (I admit it freely) and trying to deal with some ingested binary data in a way that makes sense in my brain (likely root of problem). I am ingesting binary output to stdout from a command run previous to the below code. Everything works as expected in the below code EXCEPT when I need to compare the value of previously defined variable (eg: $blu) by calling it in a foreach later where the string "blu" is an element and I try to call $blu by calling its element value in the foreach loop ${"index"} when $index equals blu, red, etc.

No matter what I try...${index}, ${'index'}, ${"index"} I can never draw in the value of $blu, $red, $grn or $ylw to evaluate whether or not it equals the value 01.

Thanks to all who take a moment to consider my quandary. Like I said I'm a hack and I'm beating my head against the desk.

             {
             chomp;
             my $dataout = $_;
             my @bytes = unpack( 'x252' . 'H2' x200, $dataout);
             my ($blu, $red, $grn, $ylw) = (@bytes[0], @bytes[12], @by
+tes[56], @bytes[120]);
             my %humanize = (
                    'blu'               => 'Blue',
                    'red'               => 'Red',
                    'grn'              => 'Green',
                    'ylw'               => 'Yellow'
             );
             foreach my $index (blu, red, grn, ylw) {
                  if (${"index"} != 01) { syslog('warning', "Color val
+ue bad $humanize{$index}"); $status_code = 1; }
           }
         }

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In reply to Calling a variable value as a variable by echo5

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