The answer of Ronald is the same answer you got at https://forum.mendix.com/link/questions/95108 with the difference that he suggests to set a reference to your currentUser object instead of redundant entity NewHelperEmployeeSelect.
Use a reference from those objects to your user object. Then when the person has made the selection connect those objects to that user. Then later you can just retrieve those objects again from that user. Do think about when you set this reference again to empty.