my name is Christian and I'm from Italy

I have a golf mk4 gti 180cv with vw navi mfd. I installed the tmc box, but the navi doesn't see it. The vcds says: 1 fault found 00481 Control module for traffic radio (j559) 40-00- no communications. Navi softcode is 00002, group 005 measurement blocks: traffic tuner 0. I went to adaptation, but there is no channel 6. There are channel 3 and 8 that are set to zero, and putting channel 8 to 1, the error 00481 goes away, but the navi still doesn't see the tmc!
Can you please tell me the correct procedure to codify the tmc? I read something about channel 19 can gate way....