Rik Beernink

Hello, I recently bought the Saitek Pro Flight Switch panel and am currently using the SPAD drivers. I'm very statisfied with the switch panel but I can't get one thing working right. (i got a registered version of FSUIPC) For example: When I try to set the panel lightning switches for the iFly 737, I assign a virtual button to the panel switch on and another one for the panel switch off. (This, I do via the SPAD software.) When I get into FSUIPC i assign these virtual buttons to Panel lights On, and Panel Lights off. I succesfully press the button and the lights go on, I press it again and the lights go off. But I can't get the lights on anymore from that point on. Could someone explaine me what I'm doing wrong? Googled the whole internet but can't find any answers. Thanks in advance, ALOT. Greetings, Rik