I'm super beginner to ruby, but for some reason my if statement isn't working. Whenever the name 'Cristina' is entered, the program continues to print "Hello there".

```
def Cus_free_makers_eg1heChallenge(str)
  str = gets
  if str == "Cristina"
    print "Hello Cristina!"
  else
    print "Hello there!"
  end
  return str
end 

```