[x2495iiii]

The world seems to work fine for me, and the variables change just fine as well.

Right click the variable at the top of the method, and click "watch this variable" to see it change in real time.

The only problem I see with the world is the fact that there's no mechanic to make the dial go specifically to the number specified, meaning that the user has to think of differences instead of values. I added one which makes the lock turn to the number entered, so that each number can be tried sequentially instead of entering 1 or -1 in every time.

The other problem is that there's no indication that the user has entered the correct number. You should add something like making the lock move or say "click" when the right number is entered.