Wappler has it’s own integration of chart.js. As far as I understand what is available in the Wappler UI is what is available a parameters/properties you can change. The Wappler “version” thus has it’s limitations, but it makes the basics easy to use.
For more options you will have to do your own charts.js integration and not use the Wappler one. It comes with lots of challenges and pitfalls if you are not a seasoned coder. Browsing the forum and searching posts on dmx.parse will help you with getting the data formatted for use. This Wappler does automatically for it’s version of charts.js.
Chart.js documentation shows it is possible to set min and max of an axis:
Here is a thread with details of 3rd party integration of another chart library: