THIS WILL NOT WORK IF YOU ARE A NEW SCRATCHER! Press the "c" key to chat. Press the "r" key to refresh the chat and check for new messages. (If the "Data" value ever changes, that means a new message was posted.) Type in a number corresponding to a message on the right to say that in the chat. The reason I made the error message so long is to prevent spam.
This is finally finished! I'm honestly pretty proud of myself. Enjoy! This is for @MECHACO-CREATOR 's game: https://scratch.mit.edu/projects/494097549 If you have a suggestion or bug report, please say it in the comments.