Zelda Styled Scrolling

In RPG Maker 2000, I tried to make NES Zelda 1 style scrolling.
I have a theory that this should work. But it hasen't been.

Common Event 1: Paralell Process
-Lock Screen Pan
-Var 01 = Screen Pos X
-Var 02 = Screen Pos Y

Common Event 2: Paralell Process
-Condition Branch: If Var 01 = 20
--Pan Screen Right 20
-End

-Condition Branch: If Var 01 = 1
--Pan Screen Left 20
-End

-Condition Branch: If Var 02 = 15
--Pan Screen Down 15
-End

-Condition Branch: If Var 02 = 1
--Pan Screen Up 15
-End

Upon Testing, the screen locks, but panning does not happen.
After I while I checked the variables with F9, I discovered the variables were not being recorded.
Infact, manually altering the variables, nothing happens still. I returned to the Switch/Variable screen to discover the variables returned to zero.

Got any ideas why?

Maybe your Debug system is defect. BTW, the variables will reset if you use the sommand NEW GAME in the title screen, if you mean that. And I think somebody made a script on www.rmxp.net/forums for zelda type scrolling. Try to search it there, it will spare you a lot of time, since you don