Thank you Steve. That was exactly what I needed.

This works perfectly.

$Str = gets.chomp
$Str.to_i < 0
  until $Str.to_i > 0
  puts 'Sorry you cannot be that weak. Please enter a valid stat.'
$Str = gets.chomp
end
$Str.to_i > StartStats.to_i
  until $Str.to_i < StartStats.to_i
  puts 'You cannot give more stats than what you have available. Please 
enter a valid stat.'
$Str = gets.chomp
end

That site is an excellent resource.
Thanks again Steve.

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