The first thing that I'm seeing looking at your code snippets is that you confuse array elements and array slices. You write: 
push(@{@{@holder[$sheet]}[$iC]},@{@{@data[$sheet]}[$iC]}[$index]);

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and I'm almost certain that you mean: 
push(@{${$holder[$sheet]}[$iC]},${${$data[$sheet]}[$iC]}[$index]);

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To simplify - to access an array element you use: 
$array[254] = 'foo';

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The @array[...] notation is used to access a slice, for example @foo = @array[2 .. 4]; which would copy the data from $array[2], $array[3] and $array[4] to $foo[0], $foo[1], $foo[2].

Fix your code to use $ instead of @ correctly, and see if that fixes your problem.

Michael

In reply to Re: Strange problem with nested arrays and scoping. by mpeppler
in thread Strange problem with nested arrays and scoping. by Tyr_7BE

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