I modified the script to use Data::Dumper after the assignment to @content{@selector} and after the loop. Using the test data

test1 test2 test3 test4
test44 afsd wfsdf sdfsd
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I got the output

$VAR1 = 'field1';
$VAR2 = 'test1';
$VAR3 = 'field2';
$VAR4 = 'test2';
$VAR5 = 'field3';
$VAR6 = 'test3';
$VAR7 = 'field4';
$VAR8 = 'test4';
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after the first assignment, so the hash is indeed being set up correctly. After the loop, my RefHash was set to

$VAR1 = {
          'field1' => 'test1',
          'field2' => 'test2',
          'field3' => 'test3',
          'field4' => 'test4'
        };
$VAR2 = {
          'field1' => 'test44',
          'field2' => 'afsd',
          'field3' => 'wfsdf',
          'field4' => 'sdfsd'
        };
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so it appears that the push worked. Perhaps your problem is to do with the way that you are trying to access the array elements? I was able to access it with

print $RefHash[0]{'field2'},"\n";
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