Changing Value of Current Focal Length In Details Panel Has No Effect When Played in Standalone

In TestPawn_BP in the details panel, when Current Focal Length is changed, there is no visible change when played in Standalone Game.

-Could not test in 4.17 due to the ARToolkit Component was not available in Engine Content
-Screenshots attached are of the Focal Length of the camera being set to 18 and 40 using the value that is being Set in the Blueprints of the Event Graph

1. Open attached project
2. Open TestMap
3. Open TestPawn_BP
4. See Current Focal Length in Details panel is set to 18
5. Play in Standalone Game
6. Go back to to TestPawn_BP
7. Change the same value to another number
8. Compile and save
9. Play in Standalone Game

Expected: Focal Length of camera is different
Result: Focal Length of camera is unchanged even after values are changed