For your first question,

I tried to use perl debugger, x Dumper \@myArrofArray

You must be doing something wrong, Dumper will print all the arrays inside your ArrofArray, one after the other.

btw, if it's the name of the array (@myArray) you are expecting to see, you will see none, only its contents.

use Data::Dumper;

my @myArray = (1,2,3);
my @myArrofArray = ();

push (@myArrofArray, \@myArray);

print Dumper(\@myArrofArray);
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$VAR1 = [
          [
            1,
            2,
            3
          ]
        ];
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