Add a select field QA with options
Add an aligned view and in the entry template add the pattern
(the template should have both [[QA]] and [[QA:key]])
Go to Browse
Press Add a new entry
A new entry form should open and display one dropdown for the QA field.
An entry is added and displays nothing for the QA field.
Edit the entry
The entry displays OP2 (for [[QA]]) and 2 (for [[QA:key]])