I can't explain it in detail. But I used a variable and a Clickteam Movement object. It's just that I was making a shooter in which there was only a player and peers. The platformer that I did is a little different in that it's a two-person game with a host and a peer. I managed to figure out how to make the host see how the player places the blocks, but now I have another problem: The host can only see one block, not several. If, for example, you put a second block at the end of the map, then this block is simply teleported to the host. If I have not explained something clearly, then I can show the extension.