Main problem seems to be min is top and max is bottom of your vertical scrollbar. The quick way to fix this would be to simply change your label to reflect the difference.
In your adjustmentValueChanged() method you need to "reverse" the input value to the calculation to account for your maximum and minimum.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.