This is a simple static data reference list creation maintenance and usage toolkit which uses a single table to maintain multiple reference lists, it provides user interface to create update delete reference lists which can then be plugged in your applications using the provided retrieval services.
The twx for 8.5.5 is attached here https://bpm.tips/?qa=blob&qa_blobid=10601894190088033756
You will need to run the deployment service to create the required table, it creates it in the Process Server DB but you can customize it to be created in a separate schema/db also. It uses xml representation of variables and stores them in the table.