### Description
I have listeners on multiple ports. (5060, 5080, 7000) I want force change port to 5060 for outbound messages. To do this i use ``` force_send_socket($Ri:5060); ``` When I check config using `kamailio -c`, then I get error message ``` syntax error, unexpected AVP_OR_PVAR ``` Could you add support of pseudo variable as argument of `force_send_socket` function