What is interval milliseconds?

[tatiang]

Pretty sure you need an in Timer1 call Start block. But I haven’t had much luck with timer’s myself!

There’s some more info about timers here:

Creating a Counting Timer

I am trying to learn to work with timers and I get that the IntervalMilliseconds value acts as a trigger event, but I want to put a timer in an app; either counting up or counting down, but I cannot seem to figure it out. I have found that Thunkable classic has a clock feature which works well in these situations, but am wondering if there is a way to do it with the timer feature that is currently available?

Timer Blocks | Thunkable Docs

I think the interval (in milliseconds) is how often the timer can create an event that you can use for whatever purpose you need (e.g. changing a variable by 1).