Thank you Daniel-Constantin for your answer, 

I added the alias with the right parameters, but now I have a problem with the "ruri", after it pass the function lookup("aliases") in my kamailio.cfg, the value of the "ruri" (request-uri) is <null>, do you have any idea if this function has changed in the version 5.2.0 ?

Bests Regards, 

Cheers, 
Igor