[SR-Users] How to print out all variables in case we reach this line?

If i call a mobil number: t: <sip:+4917625251111@sip.heissa.de>. i get 404, but would expect rewrite to carrier route: sip:+4917625251111@sip.nexxtmobile.de Is there a way to print out all variables at this moment? ########################################################### if ( is_method("ACK") ) { if ( t_check_trans() ) { # no loose-route, but stateful ACK; # must be an ACK after a 487 # or e.g. 404 from upstream server route(RELAY); exit; } else { # ACK without matching transaction ... ignore and discard exit; } } sl_send_reply("404", "Not here"); #How to print out all variables in case we reach this line??? exit; ###########################################################