It seems you have a hash of hashes. Assuming the name of your top level hash is %hash (it hopefully has a better name), you could do something like this: 
for my $key (keys %{$hash{opt}}) {
    do_something($key) if $hash{opt}{$key} == $x;
}

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In reply to Re: How can I acces the "member" stepxxx of the structure given below? by Laurent_R
in thread How can I acces the "member" stepxxx of the structure given below? by adrya407

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