Radio key – Memory key

Hello Good morning dear Phaeton Forum, I have a little time today before I have to go to the late shift, and thought about making a few settings on my Phaeton. As described in the title, I wanted to assign my radio key to a memory key. Have driver seat, steering wheel and mirror set and set the setup to Memory key 1. After that, however, as described in the picture, tries to assign the key without success? I see the correct key recognized in the infotainment, but nothing changes in the vehicle settings when I unlock as described and open the door? With a duck on button 1 on the seat, everything goes into position. Is there a trick to learn which is not described in the guide? MfG. Kuci