How to change the cataphs in the rear bumper of the LADA Kalina without removing the bumper

As practice shows, the dismantling of the broken reflector from the rear bumper LADA Kalina is possible, but this will require some effort. To do this, it is necessary to launch a hand under the bumper, feel the nut and polish its WD-40 to wash the dirt and destroy the oxides. Then, applying pressure on the reflector outside, you can try to roll the nut with your hand. If you don't, you'll have to remove the bumper, because the space inside doesn't allow you to work with the key.