Tricksta

Is there a way to randomize the tm/trs or other items? Like is it possible to randomize the move the tm/tr give like instead of TM25 giving protect it could give something like bolt strike? Also is it possible to do something similar with shops and items off the ground like the second shop guy at a pokecenter instead of giving like the X items he could randomly sell like heavy balls or apricots as an example and instead of the rock in wedgehurst instead of giving a revive it was it could randomized to something else? I just wanna know if its possible and if so how would you perform it.

Ive tried doing this multiple times with different ways of nxdump and no matter what i do i keep getting this error message