KIE Data Model Constraints Range Syntax

I am using the KIE DMN plugin. I want to define a constraint on a data type. The editor provides a dialog box for "Data Type Constraints". The dialog contains a dropdown for constraint type: Enumeration, Expression, and Range.

I am trying to define an open ended constraint e.g >=0.

I have tried the following constraints and nothing seems to work:

1. >=0
2. ">=0"
3. ">= 0"
4. [>=0]
5. "[>=0]"
6. [0..*)

For now, I have to settle with [0..1000000000].

I do not like having an arbitrary MAX.

Does anybody have a solution for using this quirky Data Type Constraing dialog box?

Hi there should be no issue in the scenario you describe. In the attached screenshot I used 'expression' constraint type to define desired range.