Others have answered your specific question, but I'd like to make a comment on your code. You're doing things like

$Doc->{Comments}
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$c->{Scope}{Text}
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and

$c->{Range}{Text}
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While this may work, it's not good style, and isn't guaranteed to work as you expect. Better to call the accessor methods, rather than violate the data abstraction model; i.e.:

$Doc->Comments
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$c->Scope->Text
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and

$c->Range->Text
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You only need the curly braces when assigning to the like-named properties, e.g.

$Word->{Visible} = 1;
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