Comments - CJM3407

I want to first say good guide. But correct me if I am wrong, but the area about object-oriented programming SomeClass, isn't there something wrong?
function MakeItUp()
{
ThatClass.SomeInteger = 5;
GetFromSomeClass(); //AnotherInteger = 5
}
Shouldn;t it be AnotherInteger=3 b/c
GetFromSomeClass() first calls ChangeInteger() which makes
SomeInteger = 3.