Hello, I am trying to figure out how I can make a sign run a command that requires a users input. For example, I would like them to be able to click the sign, then have the console run a command for them, but prompt them for a value in the chat, then run the complete command. So for example a user sees a sign to change there nickname. They click it and are asked to enter the nickname they want in to the chat. Then the console runs the command as them using the data they entered to change their nickname. Is this even possible? Thanks for your help!