What is wrong in my code? Getting error 138 - page 4

 
Marco vd Heijden:

This is ridiculous. 

This is like your car won't start, and you grab your spare Tyre and take it to the car garage and say to the guy at the counter, here is my spare Tyre my car won't start can you fix it ?

Then the guy at the counter asks "sure but where is your car ? "

And you respond, that's irrelevant...

This is an excellent analogy.