1. use only lower case keys when you set up your hash
2. before you use the key to retrieve a value, lowercase it, like this:  $hash{lc $input}

Also, your syntax in the if statement isn't quite right. You are assigning a value to $match rather than comparing match to the hash value. To compare the values use:

• if ($match eq $hash{$input}) { ... } if your hash values can be strings containing something other than numbers. eq is the string comparison operator.
• if ($match == $hash{$input}) { ... } if the hash values are always numbers. == is the numeric comparison operator.

See perlop for details.

Best, beth

Update: added clarifications on "use ... keys"

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