Execution module on top of RAM module

Loading the RAM:
mov 0,down
mov 10,down
mov 1,down
mov 8,down
mov 2,down
mov 6,down
mov 3,down
mov 8,down
mov 4,down
mov 10,down
mov 5,down
mov 10,down
mov 6,down
mov 10,down
mov 7,down
mov 8,down
mov 8,down
mov 8,down
jro 0

I wait for the above program to halt

I then right-click (use) the RAM module while holding a ROM module (I also tried left-clicking)

If I then point the ROM module away and right-click, I get a display that apparently shows the contents of the module. I see all zeros.

What am I doing wrong?
Win7x64, Minecraft 1.16.4, Java E:/Program Files (x86)/Minecraft/runtime/jre-x64/bin/javaw.exe

Yeah, sneak right click is copy to ROM. And that that still seems to work :)

Don't think I didn't notice the extra "that" >:^)

If you are looking at an installed RAM module, and are holding a ROM module in your hand, the following actions are possible: Plain right click -> copy contents of the held ROM onto the installed RAM.
Crouch right click -> copy contents of the installed RAM onto the held ROM.

Yeah, sneak right click is copy to ROM. And that that still seems to work :)