Solved copying and saving schematic with WorldEdit API problem

Very simple problem. Im copying an area and saving it to a schematic with WorldEdit / FAWE API. I want to specify where it should be getting copied from, no online searches gave me an answer, so Im asking here.

Thanks for answering in advance

 

I have tried pasting at pos1 and pos2. I will try paste it from 0 0 0 later today

Edit: The paste is supposed to overwrite a SkyWars map where a SkyWars match had been played. Before pasting didnt do anything, but pasting from 0 0 0 made it clear exactly 1/4 of the map, so its kinda progress?

Image of what happened:

 

Yes, but where is it getting copied from? Im only specifiying a cuboid.

So after a lot of debugging, it seems to be pasting only air, cant confirm it yet. I guess my code is broken?

This is one of the weirdest things ever. I opened the created schematic online and this is how it looks:

I quit on doing this, I dont know how to delete posts, so Ill mark it as SOLVED.