We are aggressively improving the features of Appli. We have in the works a complete graph element that wraps a popular javascript graphics framework. The current graph element will be replaced by this new version.
We have a slider element in the IDE today. Please let us know if you have any questions about the slider.
We will add supporting actions so you can control the slider as expected. The ability to use SVGs as markers is a great idea. I'll add this to our plan.
Good news! The slider element is coming and will be in Appli Builder in today's update.
What do you have to do to get the update? Appli Builder keeps itself current when you start the app. If you are busy working when we update, just restart Appli Builder to get the latest version. Our update tech will do all the work for you.