Static entities are still in your database, you could still change them using SQL (if you have a user with write rights). Though this is not recommended, a static entity is a constant, it never changes value, or atleast there should never be the need to change.
If you still need the value to change, you have 2 options:
1) edit your static to fit the new values
2) change the static entity to a normal entity, with a maintenance screen to manually change the values on runtime.