MQTT Creating Objects on each clients screen

I can’t really figure out why this is not working, if anyone knows why please let me know a solution.
So what im trying to do is, when 1 client places a object (block) on the screen, it’ll create it on the other client screens aswell. something similar to minecraft so everyone can see you place blocks.

did you try looking at errors in the console? your json looks malformatted.

when logging a message in the console where is that message stored? and the json dosen’t look malformatted to me, i’ve followed your example you’ve sent me a while back and you did the exact same thing. is there anything else that could be wrong when you look at the events?