Using the new charts framework does not allow us currently to use decimal numbers in a column chart. Looking at the API specs of Plotly this should be possible. Is there any advice on how to achieve this? Or is Mendix planning to implement this feature?
As the widget has a Github repository, I would suggest raising the question as an issue there. That way you'll probably get an answer sooner. I actually someone already raised a different issue about decimals there before and a fix for that is said to be part of the next release: https://github.com/mendixlabs/charts/issues/5