4.9.4 Notes on grouping radio buttons

Radio buttons must always be grouped. If radio buttons are not grouped, Plugin Parts cannot correctly process values input from the radio buttons.
When you draw a mapping line from the radio buttons in the same group to the input parameter of a Plugin Part, operation is the same regardless of the radio button from which the mapping line is drawn. Draw the mapping line from any one of the radio buttons in the same group to the input parameter of the Plugin Part.