How do I use signal function?

The timer currently counts down from the beginning of layout.

I would like the user to click play and then the timer starts to countdown from 10. Once it reaches 0, I would like the timer to stop.

This is what I currently have...

You can just use a global variable to toggle it off if you want. var is 0 as initial value. On every 1.0 seconds you have another condition if var=1. Then you have following events : on Play clicked, set var to 1 (starts the timer) If total_seconds=0, set var to 0 (stops the timer)

Thanks plinkie, I'm new to the platform. I'd love to get stuck in but documentation is scarce. Any suggestions where I can find good documentation on "parameters for system: wait for signal" feature. I have attempted the obvious. I may be over complicating the platform.

Wait for signal is just stopping events until a "tag" is called. Did you check the documentation and examples here :

construct.net/en/tutorials/how-to-use-the-system-wait-action-63