Atmosferic light level control, Bang&Olufsen remote cont

I am controlling VELBUS from a BEO4 remote control, by means of our TT455-RT-238 Signal Converter.

It works fine, however:

In order to learn which buttons should produce a certain light level, I must learn and adjust the light level on the dimmer itself.

I am not able to specify the button and the related light level in the VELBUS configuration program. Well, I can specify all I want, but the button and the light level is not related, so pushing the wanted button does not set the light level.

I have no problems learning buttons on adr 91 and setting level on adr 81, BUT pc program will not allow me to do the same.

What is the right procedure ?