How to display a text or field value according to the option selected in a ShortText field with RangeValues in BPMS 6 Form Modeller

Issue

• How to display a text or field value according to the option selected in a ShortText field with RangeValues, in forms designed in business-central UI Form Modeller ?
• Consider the following use case.
  1. There is a process variable in a process instance that is of type List where it contains data belonging to a type Class in this format [key, name, description] .
  2. Now it is possible to access this process variable to populate the {key,name;} values from the process variable's value to list down in Range value: section so that users can select them from the drop-down.
  3. As part of this current requirement users might want that when a user chooses any option from the aforementioned drop-down list, they should be able to show a small description through a field in the task form.
     Is there a way to achieve this requirement?