xenon lights from rhd to lhd

[7.77]

i have these white knobs on my xenon.

i'have just receive a letter from BMW (france) following my asking about the french certificate......they need a specific letter from a bmw dealer saying the lights have been changed and are okay for the continent....so i have to visit my local dealer, to have this certificate and explain them i'have done this simple modification (no need to change the units)

[flow_csl]

Can somebody help me .

Today i went to 2 dealers in belgium and asked them to adjust the headlights and they did not have a clue how to do this .

The manual says that it is possible with xenon lights and you have to go to the the dealer .
I showed them the white stick that you have to pull/push but they said it doesn't work .....

Can somebody give me the correct details on how to adjust them .

Thanks .