Hello,
You can use the FM VRM_SET_VALUES to create a drop-down field on the screen with your values and keys.
TYPE-POOLS vrm.
DATA: name TYPE vrm_id,
list TYPE vrm_values,
value LIKE LINE OF list.
value-key = 'YOUR_KEY'
value-text = 'YOUR_TEXT'
APPEND value TO list
...
CALL FUNCTION 'VRM_SET_VALUES'
EXPORTING
id = 'FIELD_NAME'
values = list.
But I think you should create five different fields and create a logic in your program to do what you want.
Use it in a simple field and transfer the value to your table workarea before save in the database.
Att,
Filipe