Hi, first thank for your answer.
Yes i had already create outgoing roule, i attach screenshot. I tried also with Any instead of Lan Networks.
However i don't rebooted checkpoint after put new ipaggnignement,conf
All work fine user always receive the same ip.
Maybe something wrong on file ?
I had put
##############################################################################################
### Gateway Type IP Address User Name ###
### ============= ===== ======================================== =======================###
##############################################################################################
*, 172.16.10.5, tamponi