How do I make minecraft like command system?

hello, i am remaking minecraft in 2D and i don't know how to make the command system. i use a text input as chat and a text area as chat log. to execute a command, you should type /functionName param1 param2 param3 etc...

idk how to code that,

thank u if you try to help me (and sorry for my bad english)

C3P

cdn.discordapp.com/attachments/225550155531812865/874568287571300373/ChatCommand.c3p

functionName

+ System: tokenat(TextInput.Text, 0, " ") = "/functionName"

param1

+ System: tokenat(TextInput.Text, 1, " ") = "param1"

param2

(number)

int(tokenat(ChatTextBox.Text, 2, " "))