How to create a setInterval kind of thing in roku

Assuming you mean that you want to execute a function periodically, see the "Timed events" section in the Event Loops documentation.

--Mark

One way to approach it: Basically while your main loop is running, have a roTimespan counting up, and check it every loop. Once it's as large as you want (seconds or milliseconds), do what you want and reset the counter to 0.