How to use radio buttons

I would like to use a set of radiobuttons instead of dropdown, but somehow I can’t manage to set it up. I am setting checked property value and DataLookup, but without success.

The documentation of widget doesn’t inlcude radiobuttons so far (Screen Section Widgets - ORIGAM Documentation - ORIGAM Documentation)

It is important to select the ValueConstant property.
The idea is that all RadioButton widgets are all to be based on a single entity field and the constant will say which button will be checked.

Simple Example

You can have a boolean field. Then you will create 2 radio button widgets both based on this field. You will put _true and _false constants. When the first button will be selected, the field will be True. When the second will be checked, the field will be False.