[SOLVED]Unexpected Symbol

I'm trying to make a listen to rednet program.

Spoiler

rednet.open("right")

while true do
senderId,message,distance = rednet.receive()
print("Terminal Number:"senderId", sent you a message:"message)
end

And I get this error

Spoiler

bios:206: [string "listen"]:4: unexpected symbol

Help?
And can someone actually like run the script, and try to debug it? Instead of just taking forever by suggesting things? Thanks.

If this is the line that you letteraly put in
print("Terminal Number:"senderId", sent you a message:"message)
Then you need to change it to…

print("Terminal number:"..senderId.." sent you a message:"..message)