I am trying to increment $hash{$k}[1] += 1 but it's not working! I looked at question #174449, tried $hash{$k}[1]++, but I am still getting 1 as a value. What am I missing? Here is the code: 
my %hash=(); 
%hash=(
##keys between "" because of dots
"M01.001" =>["M01.001"]'
"M01.001.111" =>["M01.001.111"]'
"M01.001.111.111" =>["M01.001.111.111"]'
"M01.002" =>["M01.002"]'
"M01.002.003" =>["M01.002.003"]'
)

for my $k(sort keys %hash){
      my $temp = reverse($k);
      $temp =~ s/^\d{3}\.?//;
      my $t= reverse ($temp);
         if (exists $hash{$t}){
         $hash{$k}[1] += 1;
              } 
}

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Thanks.

Edit: Fixed array brackets in text para. davorg

In reply to Incrementing a hash of array value by Anonymous Monk

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