Oddly enough for ravelry, this is not immediately obvious.
To do this:
You need to pop the following into the message box
– The P in poll needs to be capitalised
– there needs to be a colon at the end of poll
– the numbers have to be at the start of each row
– there has to be a full stop after each number
More tips and tricks in this thread, which you can also use like a sandbox.