I simulated a 10 second timer that counts down from 10 to 0. This is very simple to do. All you need to do is change the text property of the text value with a custom value and include a delay of 1 second. Then add a callback for the next number with a delay of 1 second. Repeat this until you get to the number 0. There is no need to use variables to simulate a timer. If you are looking for someone to help you with your prototype, we are available for hire at: http://protonerds.com/

This one-screen prototype demonstrates some of Proto.io animation functionality.

Setting up a calendar event using Proto.io Templates and Variables

Random Password Generator created using variables.

Custom Android KitKat Scrollable Tabbar

Created using Proto.io library of fully interactive, native watchOS components.

Porsche 911 Carrera S Configurator example

Movies & Series App project Design Credits: https://www.sketchappsources.com/free-source/2896-sample-iphone-x-movies-app-sketch-freebie-resource.html

Interactive banner with video of Google TV's home page. Must click to enable key presses used on a TV focus interaction model. The menu can be navigated but is only actionable for "For You" on the home page. Switching focus to the banner will enable additional UI and pausing on left/right interactions will allow for video playback with sound. No interactions below the banner are actionable.

Tinder UI cards