Hi Bartosz,
If you look at the example panels here: https://support.rossvideo.com/hc/en-us/community/posts/360065970252-Free-DashBoard-Example-Panels-for-Everyone
You will find in the parameters subfolder a panel called "ReplacingConstraints". There are examples in that panel on how to replace different types of constraints.
For range constraints, you can do:
var rConstraint = params.createIntRangeConstraint(1,10);
params.replaceConstraint("rangeInt", rConstraint);
The 1 is the minimum and the 10 is the max. Just change those numbers to what you want.
#DashBoard