I have made a .txt file with 20 sentences in it. I want to play these lines of text to the channel at 30 minute intervals. Only 1 line at a time...

Now ive got this: /timer.#hottubmessage 0 1800 play #hottub hottubmessage.txt 2000

It works fine, except every 30 minutes it plays all 20 lines of text to the channel with a 2 second delay between each line...

Is it possible to play only 1 line every 30 minutes respectively, 1 - 20 in order... and loop it?