Giveaway code on screen help

[Gunnsmokez]

Hi guys,
I'm wondering if anyone can help me out. I would like to do a stream where i have give away codes show on screen and change to a new one every 20 minutes. I have a bunch of codes in a text file but i am unsure of how to do this, i've seen other streamers do this but none have told me how to go about setting it up.

Example of what i'm hoping to achieve

Thanks in advance

 

[pantonvich]

you could use a text source linked to a file and then change the file when you wish to change the code. You can manually edit the file or write a script to change it.