i made a message script and it said text is not a valid member of Message, can someone help?

Iam using the Roblox book on how to script and copied it exactly, but it is not working for some reason. If someone can tell me at least what exactly is wrong with this please tell me. here is the script:

local Message = Instance.new("Message") -- Defines a new instance of a message for the entire script

Message.text = "Hello World" -- Sets text of the message Message.Parent = game.Workspace -- Our message is now inside the Workspace

wait(5) -- Waits 5 seconds

Message:Remove () -- Removes our message

Lua is case-sensitive.

Message.text is not a valid property of a Message Instance. Message.Text on the other hand, is.

Message.text = "Hello World"

Replace that with

Message.Text = "Hello World"

Just adding on to what they're saying; you need to use

Message.Text

instead of

Message.text