Hello, I have a custom rendered block that I have made, it is a campfire thing, and when the player right clicks it with a flint and steel in hand it ignites. I have it working fine but the other players around do not get info that the log has been lit. I am assuming that I need to send packets to sync them and I thought of sending a boolean, but then I thought that once I send the packet it does not know what log has been ignited. So I thought that I should send a String instead ans have the coords in the String and parse the string to get the tile entity, but then I soon realized that you cannot send strings using packets. (As far as I know) So now I am stuck, Does anyone have any suggestions? All help is appreciated, Thank You!

Search custom packets.  there should be a ton of examples out there.

 

Basically you will create a packet with teh dimension, x, y, z and send it to all clients.  On the clients, when you receive the packet, mark the block accordingly.